Credit Card Security Code

The card security code is a three or four digit code imprinted on credit cards to help merchants verify that the customer has a legitimate card in hand at the time of the order.

The merchant asks the customer for the security code and then sends it to the card issuer as part of the authorization request. The card issuer checks the security code to determine its validity, then sends a result back to the merchant along with the authorization.

Please refer to the images below to locate your security code.

Security Code for Visa, Mastercard, and Discover

Image of the back of a Visa/MC/Discover Card

Security Code for American Express

Image of the front of an American Express Card

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