I just visited www.merchantfraudsquad.com and found the following in
their "Five Tools You Can Use to Prevent Fraud" section:
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Card Verification Codes
Card verification codes (known as CVV2 for Visa, CVVC for MasterCard,
and CID for American Express) are a fairly new way of verifying that a
credit card is valid. For American Express, the code is a four digit
number that appears on the front of the card above the account number.
For Visa and MasterCard, the code is a three digit number that appears
at the end of the account number on the back of the card. The code does
not get printed on any receipts.
As a merchant, you can ask for this code on your online order form. In
fact, MasterCard will require merchants to collect this information as
of April 1, 2001.
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Will the next version of ShopSite support 'Card Verification Codes'?