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What is the

is an 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 the


Visa, MasterCard & Discover:

This number is printed on your MasterCard, Visa & Discover cards in the signature area of the back of the card. (It is the last 3 digits AFTER the credit card number in the signature area of the card).


American Express:

American Express cards show the


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