AVS/CV2 checks can help us to protect you against fraud. AVS stands for Address
Verification Service and CV2 is the 3 or 4 digit security code found on most cards.
The security code can usually be found on the signature strip on the back of most
cards. In most cases the security code is the last 3 digits printed on this signature
strip as shown below.
With American Express cards, the security code is the four digits printed just above
the card number.