Unlike other card providers with a CVV of 3 digits, the American Express Card (AMEX) has a 4 digits CVV.

The position of the Amex CID code is also slightly different. For other providers, the codes are usually printed on the card’s back, next to the white signature stripe. The Amex’s code is embossed on the middle-right of the card, above the account number, next to the bank’s logo.

And instead of CVV numbers, the American Express bank calls the codes as Card Identification Code (CID) in their system.