Credit Card Security Code Explanation

The card security code is a unique three-digit number printed on your credit card. This number is not embossed on the card and hence not printed on receipts - making it difficult for anyone other than the genuine cardholder to know it. Some card issuers refer to this number as the Card Security Code others as the personal security code and others as Card Verification Value.

If your card has too many digits printed on the back, you need the last three since the others are probably the last digits of your card number.