You are required to provide your credit card ID number as an added security precaution for online and telephone purchases. See the diagrams below to locate your card ID number. If you have a Discover card, just leave the field blank on the order form.

VISA MASTERCARD AMERICAN EXPRESS
3-digit, non-embossed number on the signature panel on the back of the card after the Visa number. 3-digit, non-embossed number on the signature panel on the back of the card. 4 digit, non-embossed number above your card number on the face of your card.