Card Identification Number

The Credit Card Identification Number is a new authentication scheme established by credit card companies to further efforts towards reducing fraud for internet transactions. It consists of requiring a card holder to enter a 3 or 4 digit number in at transaction time to verify that the card is on hand. For Visa / MasterCard: The three-digit value is printed on the signature panel on the back of Visa/MasterCard cards immediately following the Visa/MasterCard card account number.

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For American Express: The Card Identification Number is the 4 digit, non-embossed number printed above your account number on the face of your card. This number is recorded as an additional security precaution.

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