Credit Card Identification

The Card ID is a 3-digit security code that is printed on the back of your Visa or MasterCard. The number appears on the signature strip after the last four digits of your account number.

The signature strip may contain your entire account number or just the last four digits of your account number. Either way, the Card ID will appear after the last four digit of your account number.

The Card ID is used to verify that you have possession of the credit card you are attempting to use.