EMV
EMV, which stands for Europay, MasterCard, and Visa, is a global standard for inter-operation of integrated circuit cards (IC cards or "chip cards") and IC card capable point of sale (POS) terminals a...
EMV - Wikipedia
Terminal verification results
Terminal verification results (TVR) is an EMV data object. The TVR is a series of bits set by the terminal reading an EMV card, based on logical tests (for example has the card expired). This data o...
Terminal action codes
Terminal action codes (TAC)s are EMV data objects. EMV terminals store three terminal action codes:Each TAC contains a series of bits, set by the Acquirer, which correspond to the bits in the Termina...
Issuer action codes
Issuer action codes (IAC)s are EMV data objects. EMV cards store three issuer action codes:Each IAC contains a series of bits, set by the card issuer, which correspond to the bits in the Terminal ver...