YOUR CARD VERIFICATION NUMBER IS YOUR ADDITIONAL PROTECTION -- to ensure your credit card information is not being used fraudulently.
If you are using a Visa or MasterCard, please provide the 3-digit CVV (Customer Verification Value). This is the non-embossed number printed on the signature panel on the back of the card immediately following the Visa or MC card account number.
If your credit card is an American Express card please provide the 4-digit CID (Confidential Identifier Number). This is the 4 digit, non-embossed number printed above your account number on the face of your card.