MasterCard. Just above your credit card number. Nowadays it is possible to easily get card details of someone else. The cvvcvc code Card Verification ValueCode is located on the back of your creditdebit card on the right side of the white signature strip. A 4digit number on the front, you are required to enter the CVV each time a payment is made and you are not present to sign a receipt. On your American Express branded credit or debit card it is a 4 digit numeric code. Therefore cvvcvc code is required for all online payments where the card is not present and the PIN code cannot be entered. Please copy your cvvcvc code from the back of your card and continue with your payment. Security, merchants Webmasters, for VisaMastercard, not only because of this fact the cvvcvc verification code is located on the back of your payment card and represents the basic security feature. CVV is an antifraud measure being introduced by credit card companies worldwide. The threedigit CVV number is printed on the signature panel on the back of the card immediately after the cardapos. This 4digit code is your Card Identification Number CID. As for online transactions, the CID is the fourdigit code printed just above the Account Number. A 3digit number in reverse italics on the back of your credit card.