On the back of your card, look at the signature box. You should see a 16-digit credit card number followed by a special 3-digit code as shown to the right. This 3-digit code is your Card Security Code.
American Express Card Users
There is a 4-digit code printed on the front of your card just above and to the right of your main credit card number as shown to the right. This 4-digit code is your Card Security Code.
