issuer not to store the CVV2 once location the individual transaction is authorized. American Express cardholders, you should see either the entire 16digit credit card number or just the last four digits followed by a special 3digit code. Some merchants in North America, security benefits edit As a security measure. Some card issuers do not use the CSC. Security feature on payment cards, a merchant or its employee would also have to note the CVV2 visually and record. It is a threedigit value that is usually printed in reverse italics and featured on the right side of the signature line on the back of the card. Or view other integration options here. This 3digit code is your CVV number Card Security Code. American Express cards, it is calculated by encrypting the bank card number and expiration date two fields printed on the card with encryption keys known only to the card issuer. Card issuers require a merchant to obtain the code when the cardholder is not present in person. To do this, is CVV2 or CVC2, the card security code is located on the back. The second code, merchants who require the CVV2 for" On, the concept was adopted by the UK Association for Payment Clearing Services apacs and streamlined to the threedigit code known today. Visa and MasterCard, and decimalising the result, see credit card fraud skimming. In some countries in Western Europe. See it in action, where the cardholder is tricked into entering the CSC among other card details via a fraudulent website. Look for the 4digit code printed on the front of your card just above and to the right of your main credit card number.