About CVV2 and Credit Card Security

An important new security feature for online and other "card-not-present" transactions now appears on recently issued Visa, Mastercard, Discover, and American Express credit cards. This new feature, called CVV2, is a three-or four-digit value which provides a cryptographic check of the information embossed on the card. Note: CVV2 is now used at most major e-commerce websites, including Amazon.com. It protects the credit card holder from fraud.

Visa, Mastercard, and Discover:
The CVV2 three-digit value is printed on the signature panel on the back of your credit card immediately following the card account number.


American Express:
The CVV2 four-digit value is printed on the front of your credit card above and to the right of the card account number.


The CVV2 value helps validate two things:
The customer has an actual credit card in his/her possession.
The card account is legitimate.

CVV2 is only printed on your credit card it is not contained in the magnetic stripe information, nor does it appear on sales receipts.