Where is the V-code located?
VISA, Mastercard, and Discover Cards Your V-Code is the 3-digit, non-embossed number printed on the signature panel on the back of the card immediately following the card account number.
American Express Your V-Code is the 4 digit, non-embossed number printed above your account number on the face of your card.
Why do you require a V-code? A V-code on credit cards is an added fraud-protection mechanism.