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An Answer To Reset (ATR) is a message output by a contact Smart Card conforming to ISO/IEC 7816 standards, following electrical reset of the card's chip by a card reader. The ATR conveys information about the communication parameters proposed by the card, and the card's nature and state.
Banking customers who have been issued a CAP reader by their bank can insert their Chip and PIN card into the CAP reader in order to participate in one of several supported authentication protocols. CAP is a form of two-factor authentication as both a smartcard and a valid PIN must be present for a transaction to succeed.
Square Terminal features a display, prints receipts, and accepts chip, swipe, and contactless payments. [42] Unlike the basic card reader, it does not require a phone or tablet. It is more affordable than Square Register. It was designed to replace the older credit card terminals encountered in many stores.
This may not be possible with use of such cards when abroad. [citation needed] Multiple cards detection When two or more contactless cards are in close proximity the system may have difficulty determining which card is intended to be used. The card-reader may charge the incorrect card or reject both. [13]
EMV contactless symbol used on compatible payment terminals. EMV stands for "Europay, Mastercard, and Visa", the three companies that created the standard.Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for ...
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 ...
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