View source for EMV

{{Short description|Smart payment card standard}}
{{Others}}
{{Use dmy dates|date=December 2019}}

[[File:JGC_VISA01s.jpg|thumb|alt=An EMV credit card|right|220x220px|An EMV credit card]]

'''EMV''' is a payment method based on a technical standard for [[smart card|smart]] [[payment card]]s and for [[payment terminal]]s and [[automated teller machine]]s which can accept them. EMV stands for "[[Europay International|Europay]], [[Mastercard]], and [[Visa Inc.|Visa]]", the three companies that created the standard.<ref name=Cutover2015/>

EMV cards are [[smart cards]], also called chip cards, integrated circuit cards (ICC), or IC cards, which store their data on [[integrated circuit]] chips, in addition to [[Magnetic stripe card|magnetic stripes]] for [[backward compatibility]]. These include cards that must be physically inserted or "dipped" into a reader, as well as [[Contactless smart card|contactless cards]] that can be read over a short distance using [[near-field communication]] technology. Payment cards which comply with the EMV standard are often called '''chip and PIN''' or '''chip and signature''' cards, depending on the authentication methods employed by the card issuer, such as a [[personal identification number]] (PIN) or [[electronic signature]]. Standards exist, based on [[ISO/IEC 7816]], for contact cards, and based on [[ISO/IEC 14443]] for contactless cards ([[Mastercard#Mastercard Contactless|Mastercard Contactless]], Visa [[PayWave]], American Express [[ExpressPay]]).<ref>{{citation |publisher=[[Cardwerk Technologies]] |url=https://www.cardwerk.com/smart-card-standards |title=Important smart card industry standards. ISO 7816}}</ref>{{better source|date=July 2022}}

== History ==
{{See also|Payment card|Smart card}}
[[File:EMVCo wordmark 2020.svg|right|class=skin-invert|thumb|Wordmark of EMVCo, a consortium that manages EMV and related standards]]
Until the introduction of chip & PIN, all face-to-face [[Credit card|credit]] or [[debit card]] transactions involved the use of a magnetic stripe or mechanical imprint to read and record account data, and a signature for purposes of identity verification. The customer hands their card to the cashier at the [[point of sale]] who then passes the card through a magnetic reader or makes an imprint from the raised text of the card. In the former case, the system verifies account details and prints a slip for the customer to sign. In the case of a mechanical imprint, the transaction details are filled in, a list of stolen numbers is consulted, and the customer signs the imprinted slip. In both cases the cashier must verify that the customer's signature matches that on the back of the card to authenticate the transaction.

Using the signature on the card as a verification method has a number of security flaws, the most obvious being the relative ease with which cards may go missing before their legitimate owners can sign them. Another involves the erasure and replacement of legitimate signature, and yet another involves the [[forgery]] of the correct signature.

The invention of the [[silicon]] [[integrated circuit]] chip in 1959 led to the idea of incorporating it onto a plastic [[smart card]] in the late 1960s by two German engineers, [[Helmut Gröttrup]] and [[Jürgen Dethloff]].<ref name="Chen">{{cite book |last1=Chen |first1=Zhiqun |title=Java Card Technology for Smart Cards: Architecture and Programmer's Guide |date=2000 |publisher=[[Addison-Wesley Professional]] |isbn=9780201703290 |pages=[https://archive.org/details/javacardtmtechno00zhiq/page/3 3]-4 |url=https://archive.org/details/javacardtmtechno00zhiq|url-access=registration }}</ref> The earliest smart cards were introduced as calling cards in the 1970s, before later being adapted for use as [[payment cards]].<ref>{{cite web |title=A short review of smart cards (2019 update) |url=https://www.gemalto.com/companyinfo/smart-cards-basics |website=[[Gemalto]] |date=7 October 2019 |access-date=27 October 2019}}</ref><ref>{{cite web |last1=Sorensen |first1=Emily |title=The Detailed History of Credit Card Machines |url=https://www.mobiletransaction.org/history-of-credit-card-machines/ |website=Mobile Transaction |access-date=27 October 2019 |date=26 July 2019}}</ref> Smart cards have since used [[MOS integrated circuit]] chips, along with [[MOS memory]] technologies such as [[flash memory]] and [[EEPROM]] (electrically [[erasable programmable read-only memory]]).<ref>{{cite book |last1=Veendrick |first1=Harry J. M. |title=Nanometer CMOS ICs: From Basics to ASICs |date=2017 |publisher=Springer |isbn=9783319475974 |page=315 |url=https://books.google.com/books?id=Lv_EDgAAQBAJ&pg=PA315}}</ref>

The first standard for smart payment cards was the [[Groupement des Cartes Bancaires CB|Carte Bancaire]] B0M4 from Bull-CP8 deployed in France in 1986, followed by the B4B0' (compatible with the M4) deployed in 1989. [[Geldkarte]] in Germany also predates EMV. EMV was designed to allow cards and terminals to be backwardly compatible with these standards. France has since migrated all its card and terminal infrastructure to EMV.

EMV stands for Europay, Mastercard, and Visa, the three companies that created the standard. The standard is now managed by EMVCo, a consortium with control split equally among Visa, Mastercard, [[JCB (credit card company)|JCB]], [[American Express]], [[China UnionPay]], and [[Discover Financial|Discover.]]<ref>{{cite web |title=EMVCo Members |publisher=EMVCo |url=http://www.emvco.com/about_emvco.aspx?id=156 |access-date=10 May 2015 |archive-date=15 February 2016 |archive-url=https://web.archive.org/web/20160215190249/http://www.emvco.com/about_emvco.aspx?id=156 |url-status=dead }}</ref> EMVCo accepts public comment on its draft standards and processes, but also allows other organizations to become "Associates" and "Subscribers" for deeper collaboration.<ref>{{Cite web|url=https://www.emvco.com/industry-collaboration/ways-to-participate/ |title=Ways to Participate |access-date=31 January 2023}}</ref> JCB joined the consortium in February 2009, China UnionPay in May 2013,<ref>{{cite press release |title=China UnionPay joins EMVCo |date=20 May 2013 |publisher=Finextra Research |url=http://www.finextra.com/news/announcement.aspx?pressreleaseid=49871 |access-date=10 May 2015}}</ref> and Discover in September 2013.<ref>{{cite web |publisher=Discover Network News |title=Discover Joins EMVCo to Help Advance Global EMV Standards |date=3 September 2013 |url= http://blog.discovernetwork.com/stories/news/discover-joins-emvco-to-help-advance-global-emv-standards/ |access-date=10 May 2015}}</ref> 

The top vendors of EMV cards and chips are: [[ABCorp|ABnote]] (American Bank Corp), CPI Card Group, [[IDEMIA]] (from the merger of [[Oberthur Technologies]] and Safran Identity & Security (Morpho) in 2017), [[Gemalto]] (acquired by the [[Thales Group]] in 2019) [[Giesecke+Devrient|Giesecke & Devrient]] and Versatile Card Technology.<ref>[https://www.businesswire.com/news/home/20160824005045/en/Top-7-Vendors-in-the-Global-EMV-Cards-Market-from-2016-to-2020-Technavio ''Top 7 Vendors in the Global EMV Cards Market from 2016 to 2020'', Technavio press release, 24 August 2016]</ref>

==Differences and benefits==
There are two major benefits to moving to smart-card-based credit card payment systems: improved security (with associated fraud reduction), and the possibility for finer control of "offline" credit-card transaction approvals. One of the original goals of EMV was to provide for multiple applications on a card: for a credit and [[debit card]] application or an e-purse. Beginning in 2013, new-issue debit cards in the US contain two applications&nbsp;— a card association (Visa, Mastercard etc.) application, and a common debit application.<ref>{{cite web |title=Visa and MasterCard Support Common Solutions to Enable U.S. Chip Debit Routing |url=https://newsroom.mastercard.com/press-releases/visa-and-mastercard-support-common-solutions-to-enable-u-s-chip-debit-routing/ |publisher=Mastercard |access-date=7 October 2020 |archive-date=14 June 2021 |archive-url=https://web.archive.org/web/20210614141746/https://newsroom.mastercard.com/press-releases/visa-and-mastercard-support-common-solutions-to-enable-u-s-chip-debit-routing/ |url-status=dead }}</ref>

EMV chip card transactions improve security against fraud compared to magnetic stripe card transactions that rely on the holder's signature and visual inspection of the card to check for features such as [[Holography|hologram]]. The use of a PIN and cryptographic algorithms such as [[Triple DES]], [[RSA (cryptosystem)|RSA]] and [[Secure Hash Algorithm|SHA]] provide authentication of the card to the processing terminal and the card issuer's host system. The processing time is comparable to online transactions, in which communications delay accounts for the majority of the time, while cryptographic operations at the terminal take comparatively little time. The supposed increased protection from fraud has allowed banks and credit card issuers to establish a "liability shift", such that merchants are liable (as of 1 January 2005 in the EU region and 1 October 2015 in the US) for any fraud that results from transactions on systems that are not EMV-capable.<ref name=Cutover2015/><ref>{{cite web |title=Shift of liability for fraudulent transactions
 |url =http://www.chipandpin.co.uk/business/card_payments/means/shift_liability.html |publisher=The UK Cards Association |access-date=10 May 2015}}</ref><ref name="US Fraud Liability Shift">{{cite web
 |title=Understanding the 2015 U.S. Fraud Liability Shifts
 |url=http://www.emv-connection.com/downloads/2015/05/EMF-Liability-Shift-Document-FINAL5-052715.pdf |website=www.emv-connection.com |publisher=EMV Migration Forum |access-date=15 November 2015
 |archive-url= https://web.archive.org/web/20150919095559/http://www.emv-connection.com/downloads/2015/05/EMF-Liability-Shift-Document-FINAL5-052715.pdf
 |archive-date=19 September 2015|url-status=dead |df=dmy-all}}</ref> The majority of implementations of EMV cards and terminals confirm the identity of the cardholder (unless the card is being used for a contactless transaction) by requiring the entry of a [[personal identification number]] (PIN) rather than signing a paper receipt. Whether or not PIN authentication takes place depends upon the capabilities of the terminal and programming of the card.

When credit cards were first introduced, merchants used mechanical rather than magnetic portable card imprinters that required [[carbon paper]] to make an imprint. They did not communicate electronically with the card issuer, and the card never left the customer's sight. The merchant had to verify transactions over a certain currency limit by telephoning the card issuer. During the 1970s in the United States, many merchants subscribed to a regularly-updated list of stolen or otherwise invalid credit card numbers. This list was commonly printed in booklet form on newsprint, in numerical order, much like a slender phone book, yet without any data aside from the list of invalid numbers. Checkout cashiers were expected to thumb through this booklet each and every time a credit card was presented for payment of any amount, prior to approving the transaction, which incurred a short delay.<ref name=CHIPnPIN_NYT/>

Later {{when|date=August 2024}}, terminal equipment at the merchant electronically contacted the card issuer, using information from the magnetic stripe to verify the card and authorize the transaction. This was much faster, but required the transaction to occur in a fixed location. Consequently, if the transaction did not take place near a terminal (in a restaurant, for example) the clerk or waiter had to take the card away from the customer and to the card machine. It was easily possible for a dishonest employee to swipe the card surreptitiously through a cheap machine that instantly recorded the information on the card and stripe; in fact, even at the terminal, a thief could bend down in front of the customer and swipe the card on a hidden reader. This made illegal cloning of cards relatively easy and a more common occurrence than before.{{citation needed|date=March 2020}}

Since the introduction of payment card chip and PIN, cloning of the chip is not feasible; only the magnetic stripe can be copied, and a copied card cannot be used by itself on a terminal requiring a PIN. The introduction of chip and PIN coincided with [[Wireless LAN|wireless]] data transmission technology becoming inexpensive and widespread. In addition to mobile-phone-based magnetic readers, merchant personnel can now bring wireless PIN pads to the customer, so the card is never out of the cardholder's sight. Thus, both chip and PIN and wireless technologies can be used to reduce the risks of unauthorized swiping and card cloning.<ref>{{cite news 
 |title=Why You're Still Not Safe From Fraud If You Have a Credit Card With a Chip
 |url=https://abcnews.go.com/Business/safe-fraud-credit-card-chip/story?id=38345575 |work=[[ABC News (United States)|ABC News]]}}</ref>

==Chip and PIN vis-à-vis chip and signature==
Chip and PIN is one of the two verification methods that EMV enabled cards can employ.<ref name=CHIPnPIN_NYT>{{cite news |newspaper=[[The New York Times]]
 |url=https://archive.nytimes.com/bits.blogs.nytimes.com/2014/12/02/preparing-for-chip-and-pin-cards-in-the-united-states/
 |title=Preparing for Chip-and-PIN Cards in the United States
 |author=Mark Scott |date=2 December 2014  |access-date=31 July 2022}}</ref> Rather than physically signing a receipt for identification purposes, the user enters a personal identification number (PIN), typically of four to six digits in length. This number must correspond to the information stored on the chip or PIN at Host. Chip and PIN technology makes it much harder for fraudsters to use a found card, inasmuch as if someone steals a card, they are unable to make fraudulent purchases unless they know the PIN.

Chip and signature, on the other hand, differentiates itself from chip and PIN by verifying a consumer's identity with a signature.<ref name=ChipSigNYT>{{cite news
|url=https://archive.nytimes.com/bucks.blogs.nytimes.com/2011/06/20/u-s-bank-and-chase-add-to-e-m-v-chip-cards-for-travelers/
|title=U.S. Bank and Chase Add to E.M.V. Chip Cards for Travelers
|author=Ann Carrns |date=20 June 2011 |access-date=31 July 2022}}</ref>

As of 2015, chip and PIN cards are common in most European countries (e.g., the UK, Ireland, France, Portugal, Finland and the Netherlands) as well as in Pakistan, Iran, Brazil, Colombia, Venezuela, India, Sri Lanka, Canada, Australia and New Zealand. Chip and signature cards are more common in the US, Mexico, parts of South America (such as Argentina and Peru) and some Asian countries (such as Taiwan, Hong Kong, Thailand, South Korea, Singapore, and Indonesia).<ref name="chipAndPin2">{{citation
  |url=http://www.ALREADYpassedFILTERwhensTOREDasCARDhub_perhaps_now#wallethub.com/edu/chip-and-pin-vs-chip-and-signature
  |title=Chip-and-PIN vs. Chip-and-Signature
|publisher=CardHub.com (now wallethub) |access-date=31 July 2012}}</ref><ref>{{cite web
|title=EMV Update: Discussion with the Federal Reserve
|url=https://www.federalreserve.gov/newsevents/rr-commpublic/visa-meeting-20140305.pdf
|publisher=Visa |access-date=2 January 2017}}</ref>

==Online, phone, and mail order transactions==
While EMV technology has helped reduce crime at the point of sale, fraudulent transactions have shifted to more vulnerable [[telephone]], [[Internet]], and [[mail order]] transactions—known in the industry as [[card not present transaction|card-not-present]] or CNP transactions.<ref>{{cite web |last1=Carlin |first1=Patricia |title=How To Reduce Chargebacks Without Killing Online Sales |url=https://www.forbes.com/sites/forbesfinancecouncil/2017/02/15/how-to-reduce-chargebacks-without-killing-online-sales/#61246fcc1cb0 |work=[[Forbes]] |date=February 15, 2017}}</ref> CNP transactions made up at least 50% of all credit card fraud.<ref>{{cite news| url= https://news.bbc.co.uk/2/hi/technology/8046492.stm| title=BBC NEWS – Technology – Credit card code to combat fraud| work=bbc.co.uk}}</ref> Because of physical distance, it is not possible for the merchant to present a keypad to the customer in these cases, so alternatives have been devised, including

* Software approaches for online transactions that involve interaction with the card-issuing bank or network's website, such as Verified by Visa and Mastercard SecureCode (implementations of Visa's [[3-D Secure]] protocol). 3-D Secure is now being replaced by [[Strong customer authentication]] as defined in the [[Payment Services Directive#Revised Directive on Payment Services (PSD2)|European Second Payment Services Directive]].
* Creating a one-time virtual card linked to a physical card with a given maximum amount.
* Additional hardware with keypad and screen that can produce a [[one-time password]], such as the [[Chip Authentication Program]].
* Keypad and screen integrated into complex cards to produce a [[one-time password]]. Since 2008, Visa has been running pilot projects using the Emue card where the generated number replaces the code printed on the back of standard cards.<ref>{{cite web
 |url=http://www.itpro.co.uk/608112/visa-tests-cards-with-built-in-pin-machine
 |title=Visa tests cards with built-in PIN machine| work=IT PRO|date=11 November 2008 }}</ref>

As for which is faster, ''[[The New York Times]]'' explained that it's a matter of perception: While the chip method requires that the chip stay in the machine until the transaction and the authorization process is completed, the phone swipe method does the authorization in the background; a receipt starts coming out right away.<ref name=PercepNYT>{{cite news
 |newspaper=[[The New York Times]]
 |url=https://www.nytimes.com/2016/05/05/technology/personaltech/in-the-race-to-pay-mobile-wallets-win.html
 |title=Why Apple Pay and Other Mobile Wallets Beat Chip Cards
 |author=Brian X. Chen  |date=4 May 2016 |access-date=31 July 2022}}</ref>

==Commands==
[[ISO/IEC 7816]]-3 defines the transmission protocol between chip cards and readers. Using this protocol, data is exchanged in ''[[smart card application protocol data unit|application protocol data units]]'' (APDUs). This comprises sending a command to a card, the card processing it, and sending a response. EMV uses the following commands:

* application block
* application unblock
* card block
* external authenticate (7816-4)
* generate application cryptogram
* get data (7816-4)
* get processing options
* internal authenticate (7816-4)
* PIN change / unblock
* read record (7816-4)
* select (7816-4)
* verify (7816-4).

Commands followed by "7816-4" are defined in ISO/IEC 7816-4 and are interindustry commands used for many chip card applications such as [[GSM]] [[Subscriber identity module|SIM]] cards.

==Transaction flow==
An EMV transaction has the following steps:<ref>{{cite web |title=How EMV (Chip & PIN) Works – Transaction Flow Chart |publisher=Creditcall Ltd |url=https://www.level2kernel.com/flow-chart.html |access-date=10 May 2015}}</ref>{{third party inline|date=December 2018}}

#[[#Application selection|Application selection]]
#[[#Initiate application processing|Initiate application processing]]
#[[#Read application data|Read application data]]
#[[#Processing restrictions|Processing restrictions]]
#[[#Offline data authentication (ODA)|Offline data authentication]]
#[[#EMV certificates|Certificates]]
#[[#Cardholder verification|Cardholder verification]]
#[[#Terminal risk management|Terminal risk management]]
#[[#Terminal action analysis|Terminal action analysis]]
#[[#First card action analysis|First card action analysis]]
#[[#Online transaction authorization|Online transaction authorization]] (only carried out if required by the result of the previous steps; mandatory in ATMs)
#[[#Second card action analysis|Second card action analysis]]
#[[#Issuer script processing|Issuer script processing]]

=== Application selection ===
[[ISO/IEC 7816]] defines a process for application selection. The intent of application selection was to let cards contain completely different applications—for example [[GSM]] and EMV.  However, EMV developers implemented application selection as a way of identifying the type of product, so that all product issuers (Visa, Mastercard, etc.) must have their own application. The way application selection is prescribed in EMV is a frequent source of interoperability problems between cards and terminals. Book 1<ref name=Book1 /> of the EMV standard devotes 15 pages to describing the application selection process.

An ''application identifier'' (AID) is used to address an application in the card or Host Card Emulation (HCE) if delivered without a card. An AID consists of a ''registered application provider identifier'' (RID) of five bytes, which is issued by the ISO/IEC 7816-5 registration authority. This is followed by a ''proprietary application identifier extension'' (PIX), which enables the application provider to differentiate among the different applications offered. The AID is printed on all EMV cardholder receipts. Card issuers can alter the application name from the name of the card network.

List of applications:
{|class="wikitable"
|-
! Card scheme / payment network
! RID
! Product
! PIX
! AID
|-
|FBF-1886 (Denmark)<ref>{{Cite book |last=Warming |first=Jan Bigum |url=https://www.amazon.com/dp/B0BBCFRGGH |title=Payments: from cowrie shells to bitcoins |date=2022-08-21 |publisher=Independently published |isbn=979-8-8405-4325-2 |language=English}}</ref>
|A000000001
|Loyalty card
|0001
|A0000000010001
|-
| [[Danmønt]] (Denmark) ||A000000001||Cash card||1010||A0000000011010
|-
| rowspan=4|[[Visa Inc.|Visa]]|| rowspan="4" |A000000003||Visa credit or debit||1010||A0000000031010
|-
| [[Visa Electron]]||2010||A0000000032010
|-
| [[V Pay]]||2020||A0000000032020
|-
| [[Plus (interbank network)|Plus]]||8010||A0000000038010
|-
| rowspan="7" |[[MasterCard|Mastercard]]|| rowspan="5" |A000000004||Mastercard credit or debit||1010||A0000000041010
|-
|[[Mastercard]]<ref>{{cite web|url=http://www.paypass.com/documentation.html#|title=MasterCard Product & Services - Documentation|access-date=17 April 2017}}</ref>||9999||A0000000049999
|-
| [[Maestro (debit card)|Maestro]]||3060||A0000000043060
|-
| [[Cirrus (interbank network)|Cirrus]] ATM card only||6000||A0000000046000
|-
| [[Chip Authentication Program]] Securecode||8002||A0000000048002
|-
|A000000005||[[Maestro (debit card)|Maestro]] UK<br />(formerly [[Switch (debit card)|Switch]])||0001||A0000000050001
|-
|A000000010
|Mastercard (China, debit and credit cards){{NoteTag|cleared by Mastercard NetsUnion, a.k.a. Mastercard NetsUnion Information Technology (Beijing) Co., Ltd., a joint venture of Mastercard and the Chinese banking network}}
|8888
|A0000000108888
|-
| rowspan="2" | [[American Express]]||A000000025||American Express||01||A00000002501
|-
|A000000790||AMEX CHINA (debit and credit cards) {{NoteTag|cleared by American Express' joint venture Express (Hangzhou) Technology Services Company Limited}}||01||A00000079001
|-
| rowspan="3" |U.S. Debit (all interbank networks) (USA)
|A000000098
|Visa-branded card
|0840
|A0000000980840
|-
|A000000004
|Mastercard-branded card
|2203
|A0000000042203
|-
|A000000152
|Discover-branded card
|4010
|A0000001524010
|-
|[[Menards]] Credit Card (store card) (USA)
|A000000817
|Store card
|002001
|A000000817002001
|-
| [[LINK (UK)|LINK]] ATM network (UK)||A000000029||ATM card||1010||A0000000291010
|-
| rowspan=2 |[[Groupement des Cartes Bancaires CB|CB]] (France)||rowspan=2|A000000042||CB (credit or debit card)||1010||A0000000421010
|-
| CB (Debit card only)||2010||A0000000422010
|-
| [[Japan Credit Bureau|JCB]] (Japan)||A000000065||Japan Credit Bureau||1010||A0000000651010
|-
| rowspan="4" |[[Dankort]] (Denmark) || rowspan="4" |A000000121||Dankort||1010||A0000001211010
|-
|VisaDankort
|4711
|A0000001214711
|-
| Dankort (J/speedy)||4712||A0000001214712
|-
| Mastercard Dankort||4713||A0000001214713
|-
| [[Bancomat (debit card)|Consorzio Bancomat]] (Italy)||A000000141||Bancomat/PagoBancomat||0001||A0000001410001
|-
| [[Diners Club]]/[[Discover Card|Discover]]||A000000152||Diners Club/Discover||3010||A0000001523010
|-
| [[Banrisul]] (Brazil)||A000000154||Banricompras Debito||4442||A0000001544442
|-
| [[Saudi Payments Network|SPAN2]] (Saudi Arabia)||A000000228||SPAN||1010||A0000002281010
|-
| [[Interac]] (Canada) ||A000000277||Debit card||1010||A0000002771010
|-
| [[Discover Card|Discover]] (USA)||A000000324||ZIP||1010||A0000003241010
|-
| rowspan=4|[[UnionPay]] (China)|| rowspan="4" |A000000333||Debit||010101||A000000333010101
|-
| Credit||010102||A000000333010102
|-
| Quasi-credit ||010103||A000000333010103
|-
| Electronic cash ||010106||A000000333010106
|-
| [[German Banking Industry Committee|DK]] (Germany)||A000000359||[[Girocard]]||1010028001||A0000003591010028001
|-
| [[Euro Alliance of Payment Schemes|EAPS]] Bancomat (Italy)||A000000359||PagoBancomat||10100380||A00000035910100380
|-
| [[Verve International|Verve]] (Nigeria)||A000000371||Verve||0001||A0000003710001
|-
| [[ACCEL/Exchange|The Exchange Network]] ATM network (Canada/USA)||A000000439||ATM card||1010||A0000004391010
|-
| [[RuPay]] (India)||A000000524||RuPay||1010||A0000005241010
|-
|Dinube (Spain)
|A000000630
|Dinube Payment Initiation (PSD2)
|0101
|A0000006300101
|-
| rowspan=2|[[Mir (payment system)|MIR]] (Russia)||rowspan=2|A000000658||MIR Debit||2010||A0000006582010
|-
| MIR Credit||1010||A0000006581010
|-
| [[Edenred]] (Belgium)||A000000436||Ticket Restaurant||0100||A0000004360100
|-
| rowspan="2" |[[EFTPOS|eftpos]] (Australia)
| rowspan="2" |A000000384
|Savings (debit card)
|10
|A00000038410
|-
|Cheque (debit card)
|20
|A00000038420
|-
| rowspan="6" |GIM-UEMOA
<br />(Eight West African countries: Benin, Burkina Faso, Côte d'Ivoire, Guinea Bissau, Mali, Niger, Senegal, Togo)
| rowspan="6" |A000000337
|Retrait
|01 000001
|A000000337301000
|-
| Standard
|01 000002
|A000000337101000
|- [[Genesis (Card Scheme)|eTranzact]] (Nigeria)||A000000454||Genesis||0010||A0000004540010
| Classic
|01 000003
|A000000337102000
|-
| Prepaye Online
|01 000004
|A000000337101001
|-
| Prepaye {{not a typo|Possibile}} Offline
|01 000005
|A000000337102001
|-
| Porte Monnaie Electronique
|01 000006
|A000000337601001
|-
|[[meeza]] (Egypt)||A000000732||meeza Card||100123||A000000732100123
|-
|Mercury (UAE)||A000000529||Mercury Card||1010||A0000005291010
|-
| rowspan="2" |[[China T-union|China T-Union]]
| rowspan="2" |A000000632
|MOT Electronic Purse
|010105
|A000000632010105
|-
|MOT Electronic Cash
|010106
|A000000632010106
|}

===Initiate application processing===
The terminal sends the ''get processing options'' command to the card. When issuing this command, the terminal supplies the card with any data elements requested by the card in the ''processing options data objects list'' (PDOL). The PDOL (a list of tags and lengths of data elements) is optionally provided by the card to the terminal during [[#Application selection|application selection]]. The card responds with the ''application interchange profile'' (AIP), a list of functions to perform in processing the transaction. The card also provides the ''application file locator'' (AFL), a list of files and records that the terminal needs to read from the card.{{citation needed|date=March 2020}}

===Read application data===
[[Smart card]]s store data in files. The AFL contains the files that contain EMV data. These all must be read using the read record command. EMV does not specify which files data is stored in, so all the files must be read. Data in these files is stored in [[BER encoding rules|BER]] [[Type–length–value|TLV]] format. EMV defines tag values for all data used in card processing.<ref>{{cite web |title=A Guide to EMV Chip Technology |url=https://www.emvco.com/wp-content/uploads/2017/05/A_Guide_to_EMV_Chip_Technology_v2.0_20141120122132753.pdf |publisher=EMVCo |date=November 2014 |access-date=7 October 2020 |archive-date=16 February 2021 |archive-url=https://web.archive.org/web/20210216223405/https://www.emvco.com/wp-content/uploads/2017/05/A_Guide_to_EMV_Chip_Technology_v2.0_20141120122132753.pdf |url-status=dead }}</ref>

===Processing restrictions===
The purpose of the ''processing restrictions'' is to see if the card should be used. Three data elements read in the previous step are checked: Application version number, Application usage control (this shows whether the card is only for domestic use, etc.), Application effective/expiration dates checking.{{citation needed|date=March 2020}}

If any of these checks fails, the card is not necessarily declined. The terminal sets the appropriate bit in the [[terminal verification results]] (TVR), the components of which form the basis of an accept/decline decision later in the transaction flow. This feature lets, for example, card issuers permit cardholders to keep using expired cards after their expiry date, but for all transactions with an expired card to be performed on-line.{{citation needed|date=March 2020}}

===Offline data authentication (ODA)===
Offline data authentication is a cryptographic check to validate the card using [[public-key cryptography]]. There are three different processes that can be undertaken depending on the card:{{citation needed|date=March 2020}}
*''Static data authentication'' (SDA) ensures data read from the card has been signed by the card issuer. This prevents modification of data, but does not prevent cloning.
*''Dynamic data authentication'' (DDA) provides protection against modification of data and cloning.
*''Combined DDA/generate application cryptogram'' (CDA) combines DDA with the generation of a card's ''application cryptogram'' to assure card validity. Support of CDA in devices may be needed, as this process has been implemented in specific markets. This process is not mandatory in terminals and can only be carried out where both card and terminal support it.{{citation needed|date=March 2020}}

===EMV certificates===
To verify the authenticity of payment cards, EMV certificates are used. The EMV Certificate Authority<ref name="Certs">{{cite web |url=https://emvca.com/index.html#EMV-CA |title=EMV CA |date=20 November 2010 |publisher=EMV Certificate Authority Worldwide |access-date=March 20, 2020 |archive-date=4 July 2020 |archive-url=https://web.archive.org/web/20200704133359/https://emvca.com/index.html#EMV-CA |url-status=dead }}</ref> issues digital certificates to payment card issuers. When requested, the payment card chip provides the card issuer's public key certificate and Signed Static Application Data (SSAD)<ref>https://www.openscdp.org/scripts/tutorial/emv/SDA.html</ref> to the terminal. The terminal retrieves the CA's public key from local storage and uses it to confirm trust for the CA and, if trusted, to verify the card issuer's public key was signed by the CA.  If the card issuer's public key is valid, the terminal uses the card issuer's public key to verify the card's SSAD was signed by the card issuer.<ref name="Security">{{cite web |url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/EMV_v4.3_Book_2_Security_and_Key_Management_20120607061923900.pdf |title=Book 2: Security and Key Management (PDF). 4.3. |publisher=EMVCo. 29 November 2011. |access-date=20 September 2018 }}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

===Cardholder verification===
Cardholder verification is used to evaluate whether the person presenting the card is the legitimate cardholder. There are many cardholder verification methods (CVMs) supported in EMV. They are{{citation needed|date=March 2020}}
*Signature
*Offline plaintext PIN
*Offline enciphered PIN
*Offline plaintext PIN and signature
*Offline enciphered PIN and signature
*Online PIN
*No CVM required
*Consumer Device CVM
*Fail CVM processing

The terminal uses a CVM list read from the card to determine the type of verification to perform. The CVM list establishes a priority of CVMs to use relative to the capabilities of the terminal. Different terminals support different CVMs. ATMs generally support online PIN. POS terminals vary in their CVM support depending on type and country.{{citation needed|date=March 2020}}

For offline enciphered PIN methods, the terminal encrypts the cleartext PIN block with the card's public key before sending it to the card with the [[#Commands|Verify]] command. For the online PIN method, the cleartext PIN block is encrypted by the terminal using its point-to-point encryption key before sending it to the acquirer processor in the authorization request message.

All offline methods are [[#2010: Hidden hardware disables PIN checking on stolen card|vulnerable to man-in-the-middle attacks]].
In 2017, EMVCo added support for biometric verification methods in version 4.3 of the EMV specifications.<ref>[https://www.emvco.com/wp-content/uploads/2017/03/EMVCo-Website-Content-2.1-Contact-Portal-plus-Biometric-FAQ_v2.pdf Contact Chip – General Frequently Asked Questions (FAQ)] {{Webarchive|url=https://web.archive.org/web/20210615150532/https://www.emvco.com/wp-content/uploads/2017/03/EMVCo-Website-Content-2.1-Contact-Portal-plus-Biometric-FAQ_v2.pdf |date=15 June 2021 }}</ref>

===Terminal risk management===
Terminal risk management is only performed in devices where there is a decision to be made whether a transaction should be authorised on-line or offline. If transactions are always carried out on-line (e.g., ATMs) or always off-line, this step can be skipped.  Terminal risk management checks the transaction amount against an offline ceiling limit (above which transactions should be processed on-line). It is also possible to have a 1 in an online counter, and a check against a hot card list (which is only necessary for off-line transactions). If the result of any of these tests is positive, the terminal sets the appropriate bit in the [[terminal verification results]] (TVR).<ref>{{cite web |title=ContactlessSpecifications for Payment Systems |url=https://www.emvco.com/wp-content/uploads/2017/05/C-4_Kernel_4_v2.6_20160512101635327.pdf |publisher=EMVCo |access-date=7 October 2020 |archive-date=15 June 2021 |archive-url=https://web.archive.org/web/20210615151656/https://www.emvco.com/wp-content/uploads/2017/05/C-4_Kernel_4_v2.6_20160512101635327.pdf |url-status=dead }}</ref>

===Terminal action analysis===
The results of previous processing steps are used to determine whether a transaction should be approved offline, sent online for authorization, or declined offline. This is done using a combination of [[data object]]s known as ''terminal action codes'' (TACs) held in the terminal and ''issuer action codes'' (IACs) read from the card. The TAC is [[Logical disjunction|logically OR'd]] with the IAC, to give the transaction acquirer a level of control over the transaction outcome. Both types of action code take the values Denial, Online, and Default. Each action code contains a series of bits which correspond to the bits in the [[Terminal verification results]] (TVR), and are used in the terminal's decision whether to accept, decline or go on-line for a payment transaction.  The TAC is set by the card acquirer; in practice card schemes advise the TAC settings that should be used for a particular terminal type depending on its capabilities.  The IAC is set by the card issuer; some card issuers may decide that expired cards should be rejected, by setting the appropriate bit in the Denial IAC. Other issuers may want the transaction to proceed on-line so that they can in some cases allow these transactions to be carried out.<ref>{{citation
  |url=https://www.abbreviationfinder.org/acronyms/tac_terminal-action-code.html
  |title=TAC Definition: Terminal Action Code}}</ref>{{better source|date=July 2022}} 

When an online-only device performs IAC-Online and TAC-Online processing the only relevant TVR bit is "Transaction value exceeds the floor limit". Because the floor limit is set to zero, the transaction should always go online and all other values in TAC-Online or IAC-Online are irrelevant. Online-only devices do not need to perform IAC-default processing. An online-only device such as an ATM always attempts to go on-line with the authorization request, unless declined off-line due to IAC-Denial settings. During IAC-Denial and TAC-Denial processing, for an online only device, the only relevant [[Terminal verification results]] bit is "Service not allowed".<ref name=VisaTAC>{{cite web
|title=Visa technology partner: Terminal Action Code (VISA Minimum)
|url=https://technologypartner.visa.com/Download.aspx/id=395}}</ref>

===First card action analysis ===
One of the data objects read from the card in the [[#Read application data|Read application data]] stage is CDOL1 (Card Data object List). This object is a list of tags that the card wants to be sent to it to make a decision on whether to approve or decline a transaction (including transaction amount, but many other data objects too). The terminal sends this data and requests a cryptogram using the generate application cryptogram command. Depending on the terminal's decision (offline, online, decline), the terminal requests one of the following cryptograms from the card:{{citation needed|date=March 2020}}

*Transaction certificate (TC)—offline approval
*Authorization Request Cryptogram (ARQC)—online authorization
*Application Authentication Cryptogram (AAC)—offline decline

This step gives the card the opportunity to accept the terminal's action analysis or to decline a transaction or force a transaction on-line. The card cannot return a TC when an ARQC has been asked for, but can return an ARQC when a TC has been asked for.<ref name=VisaTAC/>

===Online transaction authorization===
Transactions go online when an ARQC has been requested. The ARQC is sent in the authorisation message. The card generates the ARQC. Its format depends on the card application. EMV does not specify the contents of the ARQC. The ARQC created by the card application is a [[digital signature]] of the transaction details, which the card issuer can check in real time. This provides a strong cryptographic check that the card is genuine. The issuer responds to an authorization request with a response code (accepting or declining the transaction), an authorisation response cryptogram (ARPC) and optionally an issuer script (a string of commands to be sent to the card).<ref name=VisaTAC/>

ARPC processing is not performed in contact transactions processed with Visa Quick Chip<ref name="Quick Chip">{{Cite web|url=https://usa.visa.com/visa-everywhere/security/visa-quick-chip.html|title=Quick Chip|access-date=30 November 2020|archive-date=12 November 2020|archive-url=https://web.archive.org/web/20201112035746/https://usa.visa.com/visa-everywhere/security/visa-quick-chip.html|url-status=dead}}</ref> for EMV and Mastercard M/Chip Fast,<ref name="newsroom.mastercard.com">{{Cite web
|url=https://newsroom.mastercard.com/press-releases/mchip-fast-from-mastercard-speeds-emv-transactions-and-shoppers-through-checkout
|title=M/Chip Fast from MasterCard Speeds EMV Transactions and Shoppers Through Checkout
|access-date=30 November 2020
|archive-date=28 October 2020
|archive-url=https://web.archive.org/web/20201028084527/https://newsroom.mastercard.com/press-releases/mchip-fast-from-mastercard-speeds-emv-transactions-and-shoppers-through-checkout/
|url-status=dead
}}</ref> and in [[Contactless smart card|contactless transactions]] across schemes because the card is removed from the reader after the ARQC has been generated.

===Second card action analysis===
CDOL2 (Card data object list) contains a list of tags that the card wanted to be sent after online transaction authorisation (response code, ARPC, etc.). Even if for any reason the terminal could not go online (e.g., communication failure), the terminal should send this data to the card again using the generate authorisation cryptogram command. This lets the card know the issuer's response. The card application may then reset offline usage limits.

===Issuer script processing===
If a card issuer wants to update a card post issuance it can send commands to the card using issuer script processing. Issuer scripts are meaningless to the terminal and can be encrypted between the card and the issuer to provide additional security. Issuer script can be used to block cards, or change card parameters.<ref>{{Cite web|url=https://www.emvco.com/wp-content/uploads/documents/A-Guide-to-EMV-Chip-Technology-v3.0-1.pdf|title=Terms of Use}}{{Dead link|date=October 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

Issuer script processing is not available in contact transactions processed with Visa Quick Chip<ref name="Quick Chip"/> for EMV and Mastercard M/Chip Fast,<ref name="newsroom.mastercard.com"/> and for [[Contactless smart card|contactless transactions]] across schemes.

==EMV chip specification==
[[File:Kontaktfeld.Kreditkarte.EMV-Standard.jpg|thumb|Contact pad for the electrical interface on the front side of a credit card]]

The first version of EMV standard was published in 1995. Now the standard is defined and managed by the privately owned corporation EMVCo LLC. The current members of EMVCo<ref name="emvco members">{{cite web |last1=EMVCo |title=EMVCo Members |url=https://www.emvco.com/about/emvco-members/ |access-date=1 August 2020 |ref=emvco-members}}</ref> are [[American Express]], [[Discover Financial]], [[JCB (credit card company)|JCB International]], [[MasterCard|Mastercard]], [[China UnionPay]], and [[Visa Inc.]] Each of these organizations owns an equal share of EMVCo and has representatives in the EMVCo organization and EMVCo working groups.

Recognition of compliance with the EMV standard (i.e., device certification) is issued by EMVCo following submission of results of testing performed by an accredited testing house.{{citation needed|date=March 2020}}

EMV Compliance testing has two levels: EMV Level 1, which covers physical, electrical and transport level interfaces, and EMV Level 2, which covers payment application selection and credit financial transaction processing.{{citation needed|date=March 2020}}

After passing common EMVCo tests, the software must be certified by payment brands to comply with proprietary EMV implementations such as Visa VSDC, American Express AEIPS, Mastercard MChip, JCB JSmart, or EMV-compliant implementations of non-EMVCo members such as LINK in the UK, or Interac in Canada.{{citation needed|date=March 2020}}

==List of EMV documents and standards==
{{outdated section|date=March 2020}}
As of 2011, since version 4.0, the official EMV standard documents which define all the components in an EMV payment system are published as four "books" and some additional documents:
* Book 1: Application Independent ICC to Terminal Interface Requirements<ref name="Book1">{{cite web|url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/EMV_v4.3_Book_1_ICC_to_Terminal_Interface_2012060705394541.pdf|title=Book 1: Application Independent ICC to Terminal Interface Requirements|publisher=EMVCo|date=November 30, 2011|access-date=September 20, 2018|version=4.3}}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Book 2: Security and Key Management<ref>{{cite web|url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/EMV_v4.3_Book_2_Security_and_Key_Management_20120607061923900.pdf|title=Book 2: Security and Key Management|publisher=EMVCo|date=November 29, 2011|access-date=September 20, 2018|version=4.3}}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Book 3: Application Specification<ref>{{cite web|url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/EMV_v4.3_Book_3_Application_Specification_20120607062110791.pdf|title=Book 3: Application Specification|publisher=EMVCo|date=November 28, 2011|access-date=September 20, 2018|version=4.3}}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Book 4: Cardholder, Attendant, and Acquirer Interface Requirements<ref>{{cite web|url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/EMV_v4.3_Book_4_Other_Interfaces_20120607062305603.pdf|title=Book 4: Cardholder, Attendant, and Acquirer Interface Requirements|publisher=EMVCo|date=November 27, 2011|access-date=September 20, 2018|version=4.3}}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Common Payment Application Specification<ref>{{cite web| url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/CPA_Specifications_v1_Plus_Bulletins_20111122095216845-1.zip| title=SB CPA Specification v1 Plus Bulletins| publisher=EMVCo| format=PDF| date=March 1, 2008| access-date=September 20, 2018}}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* EMV Card Personalisation Specification<ref>{{cite web|url=https://www.emvco.com/wp-content/plugins/pmpro-customizations/oy-getfile.php?u=/wp-content/uploads/documents/EMV_CPS_v1.1_20111123125920236.pdf|title=EMV® Card Personalization Specification|publisher=EMVCo|date=July 1, 2007|access-date=September 20, 2018}}{{Dead link|date=February 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

===Versions===
The first EMV standard came into view in 1995 as EMV 2.0. This was upgraded to EMV 3.0 in 1996 (sometimes referred to as EMV '96) with later amendments to EMV 3.1.1 in 1998. This was further amended to version 4.0 in December 2000 (sometimes referred to as EMV 2000). Version 4.0 became effective in June 2004. Version 4.1 became effective in June 2007. Version 4.2 is in effect since June 2008. Version 4.3 is in effect since November 2011.<ref>{{cite web|title=Integrated Circuit Card Specifications for Payment Systems|url=http://www.emvco.com/specifications.aspx?id=23|publisher=EMVCo|access-date=26 March 2012|archive-date=2 April 2012|archive-url=https://web.archive.org/web/20120402183733/http://www.emvco.com/specifications.aspx?id=23|url-status=dead}}</ref>

==Vulnerabilities==

=== Opportunities to harvest PINs and clone magnetic stripes ===
In addition to the track-two data on the magnetic stripe, EMV cards generally have identical data encoded on the chip, which is read as part of the normal EMV transaction process. If an EMV reader is compromised to the extent that the conversation between the card and the terminal is intercepted, then the attacker may be able to recover both the track-two data and the PIN, allowing construction of a magnetic stripe card, which, while not usable in a Chip and PIN terminal, can be used, for example, in terminal devices that permit fallback to magstripe processing for foreign customers without chip cards, and defective cards. This attack is possible only where (a) the offline PIN is presented in plaintext by the PIN entry device to the card, where (b) magstripe fallback is permitted by the card issuer and (c) where geographic and behavioural checking may not be carried out by the card issuer.{{citation needed|date=March 2020}}

[[APACS]], representing the UK payment industry, claimed that changes specified to the protocol (where card verification values differ between the magnetic stripe and the chip – the iCVV) rendered this attack ineffective and that such measures would be in place from January 2008.<ref>{{cite web|url=https://news.bbc.co.uk/2/hi/programmes/newsnight/7265888.stm|title=How secure is Chip and PIN?|publisher=BBC Newsnight|date=2008-02-26}}</ref> Tests on cards in February 2008 indicated this may have been delayed.<ref>{{cite web| url=http://www.cl.cam.ac.uk/research/security/banking/ped/ |title=PIN Entry Device (PED) vulnerabilities |author=Saar Drimer |author2=Steven J. Murdoch |author3=Ross Anderson |publisher=University of Cambridge Computer Laboratory |access-date=10 May 2015}}</ref>

==== Successful attacks ====
Conversation capturing is a form of attack which was reported to have taken place against [[Royal Dutch Shell|Shell]] terminals in May 2006, when they were forced to disable all EMV authentication in their petrol stations after more than £1 million was stolen from customers.<ref>{{cite news |url=https://news.bbc.co.uk/2/hi/uk_news/england/4980190.stm |title=Petrol firm suspends chip-and-pin |work=BBC News |date=6 May 2006 |access-date=13 March 2015}}</ref>

In October 2008, it was reported that hundreds of EMV card readers intended for use in Britain, Ireland, the Netherlands, Denmark, and Belgium had been tampered with in China during or shortly after manufacture. For nine months, details and PINs of credit and debit cards were sent over mobile phone networks to criminals in [[Lahore]], Pakistan. United States National Counterintelligence Executive Joel Brenner said, "Previously only a nation state's intelligence agency would have been capable of pulling off this type of operation. It's scary." Stolen data was typically used a couple of months after the card transactions to make it harder for investigators to pin down the vulnerability. After the fraud was discovered it was found that tampered-with terminals could be identified as the additional circuitry increased their weight by about 100 grams. Tens of millions of pounds are believed to have been stolen.<ref>{{cite news |title=Organized crime tampers with European card swipe devices |publisher=The Register |date=10 October 2008 |url=https://www.theregister.co.uk/2008/10/10/organized_crime_doctors_chip_and_pin_machines/}}</ref> This vulnerability spurred efforts to implement better control of POS devices over their entire lifecycle, a practice endorsed by electronic payment security standards like those being developed by the Secure POS Vendor Alliance (SPVA).<ref>{{cite web|title=Technical Working Groups, Secure POS Vendor Alliance |year=2009 |url=http://www.spva.org/technicalWorking.aspx/ |url-status=dead |archive-url=https://web.archive.org/web/20100415180123/http://www.spva.org/technicalWorking.aspx |archive-date=15 April 2010 }}</ref>

==== PIN harvesting and stripe cloning ====
In a February 2008 BBC ''[[Newsnight]]'' programme Cambridge University researchers [[Steven Murdoch]] and Saar Drimer demonstrated  one example attack, to illustrate that Chip and PIN is not secure enough to justify passing the liability to prove fraud from banks onto customers.<ref>{{Cite news| url=https://news.bbc.co.uk/2/hi/programmes/newsnight/7265437.stm | work=BBC News | title=Is Chip and Pin really secure? | date=26 February 2008 | access-date=2 May 2010}}</ref><ref>{{cite news
 |title=Chip and pin
 |url=https://www.bbc.co.uk/consumer/tv_and_radio/watchdog/reports/insurance_and_finance/insurance_20070206.shtm
 |date=6 February 2007
 |df=dmy
 |archive-url=https://web.archive.org/web/20070705052347/http://www.bbc.co.uk/consumer/tv_and_radio/watchdog/reports/insurance_and_finance/insurance_20070206.shtml
 |archive-date=5 July 2007
 |url-status=dead
}}</ref> The Cambridge University exploit allowed the experimenters to obtain both card data to create a magnetic stripe and the PIN.

[[APACS]], the UK payments association, disagreed with the majority of the report, saying "The types of attack on PIN entry devices detailed in this report are difficult to undertake and not currently economically viable for a fraudster to carry out."<ref>{{cite news |author=John Leyden |date=27 February 2008 |title=Paper clip attack skewers Chip and PIN |publisher=The Channel |url=http://www.channelregister.co.uk/2008/02/27/credit_card_reader_security_pants/ |access-date=10 May 2015}}</ref> They also said that changes to the protocol (specifying different card verification values between the chip and magnetic stripe – the iCVV) would make this attack ineffective from January 2008.

In August 2016, [[NCR Corporation]] security researchers showed how credit card thieves can rewrite the code of a magnetic strip to make it appear like a chipless card, which allows for counterfeiting.{{citation needed|date=March 2020}}

===2010: Hidden hardware disables PIN checking on stolen card===
{{Wikinews|Chip and PIN 'not fit for purpose', says Cambridge researcher}}
On 11 February 2010 Murdoch and Drimer's team at Cambridge University announced that they had found "a flaw in chip and PIN so serious they think it shows that the whole system needs a re-write" that was "so simple that it shocked them". A stolen card is connected to an electronic circuit and to a fake card which is inserted into the terminal ("[[man-in-the-middle attack]]"). Any four digits can be typed in and accepted as a valid PIN.<ref name=EMVPINverificationwedgevulnerability>{{cite web
| author = Steven J. Murdoch |author2=Saar Drimer |author3=Ross Anderson |author4=Mike Bond
| title = EMV PIN verification "wedge" vulnerability
| publisher = Computer Laboratory, University of Cambridge
| url = http://www.cl.cam.ac.uk/research/security/banking/nopin/
| access-date = 2010-02-12}}</ref><ref name=BBC201002>{{cite news |author=Susan Watts |url=https://www.bbc.co.uk/blogs/newsnight/susanwatts/2010/02/new_flaws_in_chip_and_pin_syst.html |work=BBC News |title=New flaws in chip and pin system revealed |date=11 February 2010 |access-date= 2010-02-12}}</ref>

A team from the BBC's ''Newsnight'' programme visited a Cambridge University cafeteria (with permission) with the system, and were able to pay using their own cards (a thief would use stolen cards) connected to the circuit, inserting a fake card and typing in "0000" as the PIN. The transactions were registered as normal, and were not picked up by banks' security systems. A member of the research team said, "Even small-scale criminal systems have better equipment than we have. The amount of technical sophistication needed to carry out this attack is really quite low." The announcement of the vulnerability said, "The expertise that is required is not high (undergraduate level electronics). We dispute the assertion by the banking industry that criminals are not sophisticated enough, because they have already demonstrated a far higher level of skill than is necessary for this attack in their miniaturized PIN entry device skimmers." It was not known if this vulnerability had been exploited, but it could explain unresolved cases of claimed fraud.<ref name=BBC201002/>

EMVCo disagreed and published a response saying that, while such an attack might be theoretically possible, it would be extremely difficult and expensive to carry out successfully, that current compensating controls are likely to detect or limit the fraud, and that the possible financial gain from the attack is minimal while the risk of a declined transaction or exposure of the fraudster is significant.<ref>{{cite web
 |title        = Response from EMVCo to the Cambridge University Report on Chip and PIN vulnerabilities ('Chip and PIN is Broken' – February 2010)
 |publisher    = EMVCo
 |url          = http://www.emvco.com/documents/EMVCo_response_to_Cambridge_Report.pdf
 |access-date   = 2010-03-26
 |archive-url  = https://web.archive.org/web/20100508040131/http://www.emvco.com/documents/EMVCo_response_to_Cambridge_Report.pdf
 |archive-date = 8 May 2010
 |url-status     = dead
 |df           = dmy-all
}}</ref> The Cambridge team disagrees: they carried it out without the banks noticing, with off-the-shelf equipment with some non-sophisticated additions. Less bulky versions could easily be made. The ones producing such equipment for the attack need not put themselves at risk, but can sell it to anybody via the Internet.<ref name=BBC201002/>

When approached for comment, several banks (Co-operative Bank, Barclays and HSBC) each said that this was an industry-wide issue, and referred the ''Newsnight'' team to the banking trade association for further comment.<ref>{{cite web| last1=Susan| first1=Watts| title=New flaws in chip and pin system revealed (11 February 2010)| url=https://www.bbc.co.uk/blogs/newsnight/susanwatts/2010/02/new_flaws_in_chip_and_pin_syst.html |website=Newsnight|publisher=BBC|access-date=9 December 2015}}</ref> According to Phil Jones of the [[Which?|Consumers' Association]], Chip and PIN has helped to bring down instances of card crime, but many cases remain unexplained. "What we do know is that we do have cases that are brought forward from individuals which seem quite persuasive."{{citation needed|date=March 2020}}

The attack uses the fact that the choice of authentication method is unauthenticated, which allows the man in the middle. The terminal asks for a PIN, gets it and gets the transaction confirmed by the card – which thinks it is doing a card-and-signature transaction, which could indeed succeed offline. It also works online, perhaps because of insufficient checks.<ref>{{cite web |url=https://www.lightbluetouchpaper.org/2010/02/11/chip-and-pin-is-broken/ |title=Chip and PIN is broken |date=2010-02-11 |author=Ross Anderson |quote=It’s no surprise to us or bankers that this attack works offline [...] the real shocker is that it works online too}}</ref>

Originally, bank customers had to prove that they had not been negligent with their PIN before getting redress, but UK regulations in force from 1 November 2009 placed the onus on banks to prove that a customer has been negligent in any dispute, with the customer given 13 months to make a claim.<ref name=bankliable>{{cite news |author=Richard Evans |date=15 October 2009 |url=https://www.telegraph.co.uk/finance/personalfinance/consumertips/banking/6338659/Bank-payments-13-months-to-dispute-suspicious-transactions.html |archive-url=https://web.archive.org/web/20091021224314/http://www.telegraph.co.uk/finance/personalfinance/consumertips/banking/6338659/Bank-payments-13-months-to-dispute-suspicious-transactions.html |url-status=dead |archive-date=21 October 2009 |newspaper=The Telegraph |title=Card fraud: banks now have to prove your guilt |access-date=10 May 2015}}</ref> Murdoch said that "[the banks] should look back at previous transactions where the customer said their PIN had not been used and the bank record showed it has, and consider refunding these customers because it could be they are victim of this type of fraud."<ref name=BBC201002/>

===2011: CVM downgrade allows arbitrary PIN harvest===
At the CanSecWest conference in March 2011, Andrea Barisani and Daniele Bianco presented research uncovering a vulnerability in EMV that would allow arbitrary PIN harvesting despite the cardholder verification configuration of the card, even when the supported CVMs data is signed.<ref>{{cite web |url=http://dev.inversepath.com/download/emv/emv_2011.pdf |year=2011 |publisher=Aperture Labs |title=Chip & PIN is definitely broken |author1=Andrea Barisani |author2=Daniele Bianco |author3=Adam Laurie |author4=Zac Franken |access-date=10 May 2015 |archive-date=19 October 2015 |archive-url=https://web.archive.org/web/20151019074927/http://dev.inversepath.com/download/emv/emv_2011.pdf |url-status=dead }}</ref>

The PIN harvesting can be performed with a chip skimmer. In essence, a CVM list that has been modified to downgrade the CVM to Offline PIN is still honoured by POS terminals, despite its signature being invalid.<ref>{{cite web |url=http://dev.inversepath.com/download/emv/blackhat_df-whitepaper.txt |title=EMV – Chip & Pin CVM Downgrade Attack |author=Adam Laurie |author2=Zac Franken |author3=Andrea Barisani |author4=Daniele Bianco |publisher=Aperture Labs and Inverse Path |access-date=10 May 2015 |archive-date=19 October 2015 |archive-url=https://web.archive.org/web/20151019074927/http://dev.inversepath.com/download/emv/blackhat_df-whitepaper.txt |url-status=dead }}</ref>

===PIN bypass===
In 2020, researchers David Basin, Ralf Sasse, and Jorge Toro from [[ETH Zurich]] reported<ref>{{Cite book |last1=Basin |first1=David |last2=Sasse |first2=Ralf |last3=Toro-Pozo |first3=Jorge |chapter=The EMV Standard: Break, Fix, Verify |date=2021 |title=2021 IEEE Symposium on Security and Privacy (SP)|chapter-url=https://www.computer.org/csdl/proceedings-article/sp/2021/893400a629/1oak9cbOGuQ|pages=1766–1781|arxiv=2006.08249|doi=10.1109/SP40001.2021.00037 |isbn=978-1-7281-8934-5 }}</ref><ref name=":0">{{Cite web|title=The EMV Standard: Break, Fix, Verify|url=https://emvrace.github.io/}}</ref> a security issue affecting [[Visa Inc.|Visa]] contactless cards: lack of cryptographic protection of critical data sent by the card to the terminal during an EMV transaction. The data in question determines the cardholder verification method (such as PIN verification) to be used for the transaction. The team demonstrated that it is possible to modify this data to trick the terminal into believing that no PIN is required because the cardholder was verified using their device (e.g. smartphone). The researchers developed a proof-of-concept [[Android (operating system)|Android]] app that effectively turns a physical Visa card into a mobile payment app (e.g. [[Apple Pay]], [[Google Wallet|Google Pay]]) to perform PIN-free, high-value purchases. The attack is carried out using two [[Near-field communication|NFC]]-enabled smartphones, one held near the physical card and the second held near the payment terminal. The attack might affect cards by [[Discover Financial|Discover]] and China's [[UnionPay]] but this was not demonstrated in practice, in contrast to Visa cards.

In early 2021, the same team disclosed that [[Mastercard]] cards are also vulnerable to a PIN bypass attack. They showed that criminals can trick a terminal into transacting with a Mastercard contactless card while believing it to be a Visa card. This ''card brand mixup'' has critical consequences since it can be used in combination with the PIN bypass for Visa to also bypass the PIN for Mastercard cards.<ref name=":0" />

==Implementation==
[[File:Debit Card Chip Package (Back) (49924994081).jpg|thumb|An EMV chip [[semiconductor package]] on the side opposite to its contact pads]]
[[File:Debit Card Chip (Whitebalanced).png|thumb|View of the chip, a [[die shot]]]]
EMV stands for "[[Europay International|Europay]], [[Mastercard]], and [[Visa Inc.|Visa]]", the three companies that created the standard. The standard is now managed by [[EMVCo]], a consortium of financial companies.<ref name=Cutover2015/> Additional widely known chips of the EMV standard are:
* AEIPS: American Express
* UICS: China Union Pay
* J Smart: JCB
* D-PAS: Discover/Diners Club International
* Rupay: NPCI
* Verve

Visa and Mastercard have also developed standards for using EMV cards in devices to support [[card not present transaction]]s (CNP) over the telephone and Internet. Mastercard has the [[Chip Authentication Program]] (CAP) for secure e-commerce. Its implementation is known as EMV-CAP and supports a number of modes. Visa has the Dynamic Passcode Authentication (DPA) scheme, which is their implementation of CAP using different default values.

In many countries of the world, debit card and/or credit card payment networks have implemented liability shifts.{{citation needed|date=March 2020}} Normally, the card issuer is liable for fraudulent transactions. However, after a liability shift is implemented, if the ATM or merchant's point of sale terminal does not support EMV, the ATM owner or merchant is liable for the fraudulent transaction.

Chip and PIN systems can cause problems for travellers from countries that do not issue Chip and PIN cards as some retailers may refuse to accept their chipless cards.<ref>{{cite web| url= http://www.creditcards.com/credit-cards-news/outdated-smart-card-chip-pin-1273.php |title=US credit cards outdated, less useful abroad, as 'Chip and PIN' cards catch on |work=creditcards.com }}{{dead link|date=December 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> While most terminals still accept a magnetic strip card, and the major credit card brands require vendors to accept them,<ref>{{cite web|url=http://www.visa-asia.com/ap/au/cardholders/tips/tips_visiting_uk.shtml|title=Visa Australia|work=visa-asia.com|access-date=29 June 2015|archive-date=22 September 2013|archive-url=https://web.archive.org/web/20130922231657/http://www.visa-asia.com/ap/au/cardholders/tips/tips_visiting_uk.shtml|url-status=dead}}</ref> some staff may refuse to take the card, under the belief that they are held liable for any fraud if the card cannot verify a PIN. Non-chip-and-PIN cards may also not work in some unattended vending machines at, for example, train stations, or self-service check-out tills at supermarkets.<ref>{{cite news| url=https://www.nytimes.com/2009/10/04/travel/04pracchip.html|title=For Americans, Plastic Buys Less Abroad| first=Michelle|last=Higgins|date=29 September 2009|access-date=17 April 2017| newspaper=The New York Times}}</ref>

===Africa===
*Mastercard's liability shift among countries within this region took place on 1 January 2006.<ref name="Chargeback Guide">{{cite web | url= http://www.mastercard.com/ca/merchant/fr/getstarted/support/Chargeback_manual.pdf |title=Chargeback Guide |date=3 November 2010 |publisher=MasterCard Worldwide |access-date=May 10, 2015}}</ref> By 1 October 2010, a liability shift had occurred for all point of sale transactions.<ref name="corporate.visa.com">{{cite web|url=http://corporate.visa.com/_media/visa-international-operating-regulations.pdf |publisher=Visa International |title=Operating Regulations |url-status=dead |archive-url=https://web.archive.org/web/20130303213731/http://corporate.visa.com/_media/visa-international-operating-regulations.pdf |archive-date=3 March 2013 }}</ref>
*Visa's liability shift for points of sale took place on 1 January 2006. For ATMs, the liability shift took place on 1 January 2008.<ref name="The Journey To Dynamic Data">{{cite web |url= http://www.paymentsjournal.com/WorkArea/DownloadAsset.aspx?id=8389 |archive-url= https://web.archive.org/web/20210628134854/http://www.paymentsjournal.com/WorkArea/DownloadAsset.aspx?id=8389 |url-status= dead |archive-date= 2021-06-28 |title=The Journey To Dynamic Data |publisher=Visa }}</ref>

====South Africa====
*Mastercard's liability shift took place on 1 January 2005.<ref name="Chargeback Guide"/>

===Asian and Pacific countries===
*Mastercard's liability shift among countries within this region took place on 1 January 2006.<ref name="Chargeback Guide"/> By 1 October 2010, a liability shift had occurred for all point of sale transactions, except for domestic transactions in China and Japan.<ref name="corporate.visa.com"/>
*Visa's liability shift for points of sale took place on 1 October 2010.<ref name="The Journey To Dynamic Data"/> For ATMs, the liability shift date took place on 1 October 2015, except in China, India, Japan, and Thailand, where the liability shift was on 1 October 2017.<ref name="pressreleases.visa.com">{{cite press release |url=http://pressreleases.visa.com/phoenix.zhtml?c=215693&p=irol-newsarticlePR&ID=1780934&highlight= |title=Visa Expands U.S. Roadmap for EMV Chip Adoption to Include ATM and a Common Debit Solution |publisher=Visa |location=Foster City, Calif. |date=4 February 2013 |access-date=10 May 2015}}</ref> Domestic ATM transactions in China are not currently not subject to a liability shift deadline.

====Australia====
*Mastercard required that all point of sale terminals be EMV capable by April 2013. For ATMs, the liability shift took place in April 2012. ATMs must be EMV compliant by the end of 2015.<ref name="mastercard.com">{{cite web |url= http://www.mastercard.com/au/general/en/aboutus/press/payment_industry_fiveyearplan.html |archive-url=https://archive.today/20130128152134/http://www.mastercard.com/au/general/en/aboutus/press/payment_industry_fiveyearplan.html |url-status=dead |archive-date=2013-01-28 |title=MasterCard Announces Five Year Plan to Change the Face of the Payments Industry in Australia |publisher=Mastercard Australia}}</ref>
*Visa's liability shift for ATMs took place 1 April 2013.<ref name="The Journey To Dynamic Data"/>

====Malaysia====
*Malaysia is the first country in the world to completely migrate to EMV-compliant smart cards two years after its implementation in 2005.<ref>{{cite web |url =https://www.thestar.com.my/business/business-news/2005/07/14/malaysia-first-to-complete-chipbased-card-migration/| title=Malaysia first to complete chip-based card migration|work=The Star Online| date=14 July 2005}}</ref><ref>{{cite web | url=http://www.therakyatpost.com/business/2015/10/14/us-learns-from-malaysia-10-years-later/ | title=US learns from Malaysia, 10 years later | publisher=The Rakyat Post | date=2015-10-14 | access-date=30 December 2016 | archive-date=20 March 2019 | archive-url=https://web.archive.org/web/20190320073413/http://www.therakyatpost.com/business/2015/10/14/us-learns-from-malaysia-10-years-later/ | url-status=dead }}</ref>

====New Zealand====
*Mastercard required all point of sale terminals to be EMV compliant by 1 July 2011. For ATMs, the liability shift took place in April 2012. ATMs are required to be EMV compliant by the end of 2015.<ref name="mastercard.com"/>
*Visa's liability shift for ATMs was 1 April 2013.<ref name="The Journey To Dynamic Data"/>

===Europe===
*Mastercard's liability shift took place on 1 January 2005.<ref name="Chargeback Guide"/>
*Visa's liability shift for points of sale took place on 1 January 2006. For ATMs, the liability shift took place on 1 January 2008.<ref name="The Journey To Dynamic Data"/>
*[[France]] has cut card fraud by more than 80% since its introduction in 1992 (see [[Carte Bleue]]).

====United Kingdom====
[[File:ChipAndPin.svg|alt=Green rectangle containing a row of four white asterisks in black squares; the outline of a hand points to and obscures the second asterisk.|right|thumb|Chip and PIN UK logo]]Chip and PIN was trialled in [[Northampton]], [[England]] from May 2003,<ref>{{cite news |url = https://news.bbc.co.uk/1/hi/business/2937447.stm|title = Anti-fraud credit cards on trial| author = <!--Staff writer(s); no by-line.-->|date = 2003-04-11 |website = BBC Business News|access-date = 2015-05-27}}</ref> and as a result was rolled out nationwide in the [[United Kingdom]] on 14 February 2006<ref>{{cite web |url = http://www.chipandpin.co.uk/reflib/Consumer_digi-guide_Post_14_Feb_FINAL.PDF |title = The chip and PIN guide|author = The UK Cards Association| access-date = 2015-05-27}}</ref> with advertisements in the press and national television touting the "Safety in Numbers" slogan. During the first stages of deployment, if a fraudulent magnetic swipe card transaction was deemed to have occurred, the retailer was refunded by the issuing bank, as was the case prior to the introduction of Chip and PIN. On January 1, 2005, the liability for such transactions was shifted to the retailer; this acted as an incentive for retailers to upgrade their [[point of sale]] (PoS) systems, and most major high-street chains upgraded on time for the EMV deadline. Many smaller businesses were initially reluctant to upgrade their equipment, as it required a completely new PoS system—a significant investment.

New cards featuring both magnetic strips and chips are now issued by all major banks. The replacement of pre-Chip and PIN cards was a major issue, as banks simply stated that consumers would receive their new cards "when their old card expires"&nbsp;— despite many people having had cards with expiry dates as late as 2007. The card issuer [[Switch (debit card)|Switch]] lost a major contract with [[HBOS]] to [[Visa Inc.|Visa]], as they were not ready to issue the new cards as early as the bank wanted.

The Chip and PIN implementation was criticised as designed to reduce the liability of banks in cases of claimed card fraud by requiring the customer to prove that they had acted "with reasonable care" to protect their PIN and card, rather than on the bank having to prove that the signature matched. Before Chip and PIN, if a customer's signature was forged, the banks were [[legal liability|legally liable]] and had to reimburse the customer. Until 1 November 2009 there was no such law protecting consumers from fraudulent use of their Chip and PIN transactions, only the voluntary [[Banking Code]]. There were many reports that banks refused to reimburse victims of fraudulent card use, claiming that their systems could not fail under the circumstances reported, despite several documented successful large-scale attacks.{{citation needed|date=October 2020}}

The [[Payment Services Regulations 2009]] came into force on 1 November 2009<ref>{{cite web| url= http://www.fsa.gov.uk/Pages/About/What/International/psd/| archive-url= http://webarchive.nationalarchives.gov.uk/20081112113412/http://www.fsa.gov.uk/Pages/About/What/International/psd/ |url-status=dead |archive-date=12 November 2008|title=[ARCHIVED CONTENT] UK Government Web Archive – The National Archives|first=Internet Memory |last=Foundation |access-date=17 April 2017}}</ref> and shifted the onus onto the banks to prove, rather than assume, that the cardholder is at fault.<ref name="bankliable" /> The [[Financial Services Authority]] (FSA) said "It is for the bank, building society or credit card company to show that the transaction was made by you, and there was no breakdown in procedures or technical difficulty" before refusing liability.

===Latin America and the Caribbean===
*Mastercard's liability shift among countries within this region took place on 1 January 2005.<ref name="Chargeback Guide"/>
*Visa's liability shift for points of sale took place on 1 October 2012, for any countries in this region that had not already implemented a liability shift. For ATMs, the liability shift took place on 1 October 2014, for any countries in this region that had not already implemented a liability shift.<ref name="The Journey To Dynamic Data"/>

====Brazil====
*Mastercard's liability shift took place on 1 March 2008.<ref name="Chargeback Guide"/>
*Visa's liability shift for points of sale took place on 1 April 2011. For ATMs, the liability shift took place on 1 October 2012.<ref name="The Journey To Dynamic Data"/>

====Colombia====
*Mastercard's liability shift took place on 1 October 2008.<ref name="Chargeback Guide"/>

====Mexico====
*Discover implemented a liability shift on 1 October 2015. For pay at the pump at gas stations, the liability shift was on 1 October 2017.<ref name="finextra.com"/>
*Visa's liability shift for points of sale took place on 1 April 2011. For ATMs, the liability shift took place on 1 October 2012.<ref name="The Journey To Dynamic Data"/>

====Venezuela====
*Mastercard's liability shift took place on 1 July 2009.<ref name="Chargeback Guide"/>

===Middle East===
*Mastercard's liability shift among countries within this region took place on 1 January 2006.<ref name="Chargeback Guide"/> By 1 October 2010, a liability shift had occurred for all point of sale transactions.<ref name="corporate.visa.com"/>
*Visa's liability shift for points of sale took place on 1 January 2006. For ATMs, the liability shift took place on 1 January 2008.<ref name="The Journey To Dynamic Data"/>

===North America===

====Canada====
*American Express implemented a liability shift on 31 October 2012.<ref name=Cutover2015/><ref name="Chip Liability Shift">{{cite web
  |url= https://www.globalpaymentsinc.com/Canada/customerSupport/industryInit/chip_shift.html
  |title=Chip Liability Shift |publisher=globalpayments |url-status=dead
  |archive-url= https://web.archive.org/web/20130730014206/http://www.globalpaymentsinc.com/Canada/customerSupport/industryInit/chip_shift.html
  |archive-date=30 July 2013 }}</ref>
*Discover implemented a liability shift on 1 October 2015 for all transactions except pay-at-the-pump at gas stations; those transactions shifted on 1 October 2017.<ref name="finextra.com">{{cite press release |date=12 November 2012 |url=http://www.finextra.com/news/announcement.aspx?pressreleaseid=47300 |title=Discover to enforce EMV liability shift by 2015 |publisher=Finextra Research |access-date=10 May 2015}}</ref>{{third party inline|date=December 2018}}
*[[Interac]] (Canada's debit card network) stopped processing non-EMV transactions at ATMs on 31 December 2012, and mandated EMV transactions at point-of-sale terminals on 30 September 2016, with a liability shift taking place on 31 December 2015.<ref>{{cite web| url=https://www.interac.ca/en/fraud-prevention-for-merchants.html|title=Interac - For Merchants| access-date=17 April 2017}}</ref>{{Failed verification|date=June 2017|note=URL was added on 26 January 2016, cited page may have been updated since}}{{third party inline|date=December 2018}}
*Mastercard implemented domestic transaction liability shift on 31 March 2011, and international liability shift on 15 April 2011. For pay at the pump at gas stations, the liability shift was implemented 31 December 2012.<ref name="Chip Liability Shift"/>
*Visa implemented domestic transaction liability shift on 31 March 2011, and international liability shift on 31 October 2010. For pay at the pump at gas stations, the liability shift was implemented 31 December 2012.<ref name="Chip Liability Shift"/>
*Over a five-year period post-EMV migration, domestic card-card present fraudulent transactions significantly reduced in Canada.  According to [[Helcim]]'s reports, card-present domestic debit card fraud reduced 89.49% and credit card fraud 68.37%.<ref name=Cutover2015/><ref>{{cite web
  |title=EMV Reduces Card-Present Fraud in Canada (Infographic) - The Official Helcim™ Blog
  |url=https://www.helcim.com/article/emv-reduces-card-present-fraud-in-canada
  |access-date=17 April 2017}}</ref><!-- Cutover2015: NYTimes says already in Canada, coming to USA -->

====United States====
After widespread [[identity theft]] due to weak security in the point-of-sale terminals at [[Target Corporation|Target]], [[Home Depot]], and other major retailers, Visa, Mastercard and Discover<ref>{{cite web
|url=http://discovernetworknews.com/stories/discover-implements-emv-mandate-for-u-s-canada-and-mexico/ |title=Discover Implements EMV Mandate for U.S., Canada and Mexico |url-status=dead |archive-url=https://web.archive.org/web/20120510042529/http://discovernetworknews.com/stories/discover-implements-emv-mandate-for-u-s-canada-and-mexico/ |archive-date=10 May 2012 }}</ref> in March 2012 – and American Express<ref>{{cite press release |title=American Express Announces U.S. EMV Roadmap to Advance Contact, Contactless and Mobile Payments
 |location=New York |date=29 June 2012 |publisher=American Express
 |url=http://about.americanexpress.com/news/pr/2012/emv_roadmap.aspx |access-date=10 May 2015 |archive-url=https://web.archive.org/web/20150510232521/http://about.americanexpress.com/news/pr/2012/emv_roadmap.aspx |archive-date=10 May 2015 |url-status=dead }}</ref> in June 2012 – announced their EMV migration plans for the United States.<ref>{{cite web
|title=EMV's Uncertain Fate in the US |url=http://proteanpayment.org/?p=248
|archive-url=https://web.archive.org/web/20130929103007/http://proteanpayment.org/?p=248 |url-status=dead |archive-date=29 September 2013 |publisher=Protean Payment |access-date=22 September 2012 }}</ref> Since the announcement, multiple banks and card issuers have announced cards with EMV chip-and-signature technology, including American Express, Bank of America, Citibank, [[Wells Fargo]],<ref>{{cite web |last=Camhi |first=Jonathan |title=Wells Fargo Introduces New EMV Card for Consumers |url=http://www.banktech.com/payments-cards/wells-fargo-introduces-new-emv-card-for/240004929 |publisher=Bank Systems & Technology |date=3 August 2012 |access-date=10 May 2015 |archive-url=https://web.archive.org/web/20140605122412/http://www.banktech.com/payments-cards/wells-fargo-introduces-new-emv-card-for/240004929 |archive-date=5 June 2014 |url-status=dead |df=dmy-all }}</ref> JPMorgan Chase, U.S. Bank, and several credit unions.

In 2010, a number of companies began issuing pre-paid debit cards that incorporate Chip and PIN and allow Americans to load cash as [[euro]]s or [[pound sterling]].<ref>{{cite web| title=Travelex Offers America's First Chip & PIN Enabled Prepaid Foreign Currency Card
|url=http://www.businesswire.com/news/home/20101201006404/en/Travelex-Offers-America%E2%80%99s-Chip-PIN-Enabled-Prepaid#.UvOy50KSzwM| work=Business Wire
|access-date=6 February 2014
|date=1 December 2010}}</ref><ref name=Cutover2015>{{cite news |newspaper=[[The New York Times]]
  |url=https://www.nytimes.com/2015/09/24/business/smallbusiness/coming-soon-to-checkouts-microchip-card-payment-systems.html
  |title=Coming Soon to Checkouts: Microchip-Card Payment Systems
  |author=Stacy Cowley  |date=23 September 2015 |access-date=31 July 2022}}</ref> [[United Nations Federal Credit Union]] was the first United States issuer to offer Chip and PIN credit cards.<ref>{{cite web| url=http://www.unfcu.com/content.aspx?id=1484|title=UNFCU to be first issuer in the US to offer credit cards with a high security chip| publisher=[[United Nations Federal Credit Union]]}}</ref> In May 2010, a press release from [[Gemalto]] (a global EMV card producer) indicated that [[United Nations Federal Credit Union]] in New York would become the first EMV card issuer in the United States, offering an EMV Visa credit card to its customers.<ref>{{cite press release |title=United Nations Federal Credit Union Selects Gemalto for First U.S. Issued Globally Compliant Payment Card |url=http://www.gemalto.com/php/pr_view.php?id=749 |location=Austin, Texas |date=13 May 2010 |author=Ray Wizbowski |publisher=Gemalto |access-date=10 May 2015}}</ref> JPMorgan was the first major bank to introduce a card with EMV technology, namely its [[J.P. Morgan Reserve Card|Palladium card]], in mid-2012.<ref name="frequentbusinesstraveler.com">{{cite web |author=Paul Riegler |date=25 July 2013 |publisher=Frequent Business Traveler |url=http://www.frequentbusinesstraveler.com/2013/07/chip-and-pin-and-chip-and-signature-credit-card-primer-for-2013/ |title=Chip-and-Pin and Chip-and-Signature Credit Card Primer for 2013 |access-date=10 May 2015}}</ref>

As of April 2016, 70% of U.S. consumers had EMV cards and as of December 2016 roughly 50% of merchants were EMV compliant.<ref>{{cite web
  |magazine=[[CIO magazine]]
  |url=http://www.cio.com/article/3182785/retail/is-the-rocky-road-to-emv-retail-adoption-getting-smoother.html
  |title=Is the rocky road to EMV retail adoption getting smoother?
  |first=Sharon
  |last=Goldman
  |access-date=17 April 2017
  |date=2017-03-20
  |archive-date=27 March 2017
  |archive-url=https://web.archive.org/web/20170327171611/http://www.cio.com/article/3182785/retail/is-the-rocky-road-to-emv-retail-adoption-getting-smoother.html
  |url-status=dead
  }}</ref><ref>{{Cite web
|url=http://www.creditcards.com/credit-card-news/emv-chip-cards-arrive-poll.php
|title=EMV Credit Cards Poll
|access-date=26 March 2017
|archive-date=27 March 2017
|archive-url=https://web.archive.org/web/20170327165553/http://www.creditcards.com/credit-card-news/emv-chip-cards-arrive-poll.php
|url-status=dead
}}</ref> However, deployment has been slow and inconsistent across vendors. Even merchants with EMV hardware may not be able to process chip transactions due to software or compliance deficiencies.<ref>{{Cite news |url=https://www.cbsnews.com/news/retailers-have-chip-card-readers-why-arent-they-using-them/
   |title=Retailers have chip card readers -- why aren't they using them?
   |access-date=22 November 2017 |language=en}}</ref> Bloomberg has also cited issues with software deployment, including changes to audio prompts for [[Verifone]] machines which can take several months to release and deploy software out. Industry experts, however, expect more standardization in the United States for software deployment and standards. [[Visa Inc.|Visa]] and [[MasterCard|Mastercard]] have both implemented standards to speed up chip transactions with a goal of reducing the time for these to be under three seconds. These systems are labelled as Visa Quick Chip and Mastercard M/Chip Fast.<ref>{{Cite news| url=https://www.bloomberg.com/news/articles/2017-07-17/the-plan-to-make-chip-credit-cards-less-annoying
|title=The Plan to Make Chip Credit Cards Less Annoying |date=2017-07-17 |work=Bloomberg.com
|access-date=2017-08-05}}</ref>
*American Express implemented liability shift for point of sale terminals on 1 October 2015.<ref name="emv-connection.com">{{cite web |author=Cathy Medich |date=July 2012 <!-- date determined from this article's listing in July 2012 archive; all past-tense references are before this and all future-tense references after. --> |url=http://www.emv-connection.com/emv-migration-driven-by-payment-brand-milestones/ |title=EMV Migration – Driven by Payment Brand Milestones |access-date=10 May 2015}}</ref>{{promotional source|date=March 2019}} For pay at the pump, at gas stations, the liability shift was 16 April 2021. This was extended from 1 October 2020 due to the [[COVID-19 pandemic]].<ref>{{cite web |url=https://www.paymentssource.com/news/amex-joins-visa-in-postponing-u-s-gas-emv-migration |title=Amex joins Visa in postponing US gas EMV migration |date=5 May 2020 }}</ref>
*Discover implemented liability shift on 1 October 2015. For pay at the pump, at gas stations, the liability shift was 1 October 2020.<ref name="finextra.com"/>
*Maestro implemented liability shift of 19 April 2013, for international cards used in the United States.<ref>{{cite web |author=David Heun |date=10 September 2012 |url=http://www.paymentssource.com/news/mastercard-brings-emv-chip-card-liability-policy-to-us-atms-3011829-1.html |title=MasterCard Brings EMV Chip-Card Liability Policy to U.S. ATMs |publisher=SourceMedia |access-date=10 May 2015 |url-status=dead |archive-url =https://web.archive.org/web/20140222060737/http://www.paymentssource.com/news/mastercard-brings-emv-chip-card-liability-policy-to-us-atms-3011829-1.html |archive-date=22 February 2014 |df=dmy-all }}</ref>
*Mastercard implemented liability shift for point of sale terminals on 1 October 2015.<ref name="emv-connection.com"/> For pay at the pump, at gas stations, the liability shift formally was on 1 October 2020.<ref name="emv fuel pump delay">{{cite web|title=EMV Fuel Liability Delay Pumps Card Fraud Concerns|url=http://www.cutimes.com/2016/12/02/emv-fuel-liability-delay-pumps-card-fraud-concerns|website=Credit Union Times|access-date=4 December 2016}}</ref> For ATMs, the liability shift date was on 1 October 2016.<ref>{{cite press release |location=Purchase, N.Y. |date=10 September 2012 |url=https://newsroom.mastercard.com/press-releases/mastercard-extends-u-s-emv-migration-roadmap-to-atm-channel/ |title=MasterCard Extends U.S. EMV Migration Roadmap to ATM Channel |publisher=Mastercard |author=Beth Kitchener |access-date=10 May 2015 |archive-date=8 May 2015 |archive-url=https://web.archive.org/web/20150508003640/http://newsroom.mastercard.com/press-releases/mastercard-extends-u-s-emv-migration-roadmap-to-atm-channel/ |url-status=dead }}</ref><ref>{{cite web| url=http://www.mastercardadvisors.com/_assets/pdf/emv_us_aquirers.pdf|title=EMV For U.S. Acquirers: Seven Guiding Principles for EMV Readiness|access-date=17 April 2017| archive-url=https://web.archive.org/web/20160705051448/http://www.mastercardadvisors.com/_assets/pdf/emv_us_aquirers.pdf| archive-date=5 July 2016|url-status=dead|df=dmy-all}}</ref>
*Visa implemented liability shift for point of sale terminals on 1 October 2015. For pay at the pump, at gas stations, the liability shift formally was on 1 October 2020.<ref name="emv fuel pump delay" /><ref>{{cite press release |date=9 August 2011 |url=http://usa.visa.com/download/merchants/bulletin-us-participation-liability-shift-080911.pdf |title=Visa Announces U.S. Participation in Global Point-of-Sale Counterfeit Liability Shift |publisher=Visa |access-date=10 May 2015 |archive-date=23 May 2015
|archive-url=https://web.archive.org/web/20150523173901/http://usa.visa.com/download/merchants/bulletin-us-participation-liability-shift-080911.pdf |url-status=dead }}</ref> For ATMs, the liability shift date was on 1 October 2017.<ref name="pressreleases.visa.com"/><ref name=Cutover2015/>

==Notes==
{{notelist}}
{{notefoot}}

==See also==
* [[Contactless payment]]
* [[Supply chain attack]]
* [[Two-factor authentication]]
* [[MM code]]

==References==
{{Reflist|30em}}

==External links==
* {{official website|https://www.emvco.com/}}
* [https://www.bbc.co.uk/programmes/p0dcy7nm BBC: ''What's inside a bank card''], November 2022

{{Credit cards}}

{{DEFAULTSORT:Emv}}
[[Category:EMV| ]]
[[Category:German inventions]]
[[Category:French inventions]]
[[Category:1986 introductions]]