 | On American Express cards, the card identification number is a non-embossed, 4-digit number
on the front of the card. It appears above and either before or after the card number.
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 | On VISA cards, the card identification number is a non-embossed, 3-digit number
on the back of the card. It appears in the signature area, to the right of the card number.
|
 | On Master Card cards, the card identification number is a non-embossed, 3-digit number
on the back of the card. It appears in the signature area, to the right of the card number.
|
 | On Discover cards, the card identification number is a non-embossed, 3-digit number
on the back of the card. It appears in the signature area, to the right of the card number.
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