The City of Madison is the largest city in Dane County and the State Capital of Wisconsin. Our highly educated population, coupled with a strong mid-western work ethic, makes for an engaged workforce.
To help reduce fraud in the card-not-present environment, credit card companies have introduced a card code program. Visa calls this code Card Verification Value (CVV); MasterCard calls it Card Validation Code (CVC); Discover calls it Card ID (CID). The card code is a three- or four- digit security code that is printed on the back of cards. The number typically appears at the end of the signature panel.
Discover/Visa/MasterCard: On the back of the card, you should see a 16-digit credit card number followed by a special 3-digit code. This 3-digit code is your CID. American Express: There is a 4-digit code printed on the front of your card just above and to the right of your main credit card number.