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{{mergefrom|PINsentry|Talk:Chip Authentication Program#Merger proposal|date=July 2008}}
[[Image:nationwide-CAP-reader.jpg|thumb|right|A CAP reader]]
The '''Chip Authentication Program''' (CAP) is a [[MasterCard]] and [[Visa (company)|Visa]] initiative and technical specification for using [[EMV]] banking [[smartcards]] for [[authentication|authenticating]] users and transactions in online and telephone banking. The CAP specification defines a handheld device ("CAP reader") with a smartcard slot, a decimal keypad, and a display capable of displaying at least 12 characters (e.g., [[starburst display]]). Banking customers who have been issued a CAP reader by their bank can insert their [[Chip and PIN]] ([[EMV]]) card into the CAP reader in order to participate in one of several supported [[authentication protocol]]s. CAP is a form of [[two-factor authentication]] as both a smartcard and a valid PIN must be present for a transaction to succeed. Banks hope that the system will reduce the risk of unsuspecting customers entering their details into fraudulent websites after reading ‘[[phishing]]’ emails.<ref>http://www.theregister.co.uk/2007/04/18/pinsentry/</ref>
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