American Express Security Card Code Location
On American Express credit cards,
the 4-digit security code is located
on the front of the card, usually right above the credit card number.
Visa, Mastercard and Discover Security Code Location
On Visa, Mastercard
and Discover credit cards, the 3-digit security code
is located on the back of the card. It is the last
three digits to the far right
of the card, as indicated below:
