What is a CID or CVV2?

The Customer Card Number (known as CID or CVV2) is a three or four digit number that is unique to each card. This additional security feature is designed to protect you by helping to ensure the card is present during the purchase. It is printed only on the card, never on receipts or in order emails. The images below show how to locate this special code number on your card.

American Express Visa, MasterCard & Discover Card