CVV is an anti-fraud security feature to help
verify that you are in possession of your credit card. For Visa/Mastercard, the three-digit CVV number is printed on the
signature panel on the back of the card immediately after the card's account number. For American Express, the four-digit CVV
number is printed on the front of the card above the card account number.
Visa/Mastercard
American Express
A 3-digit number in reverse italics on the back of your credit card.
A 4-digit number on the front, just above your credit card number.