#1 小知识：Card Verification Code|
The Card Verification Code, or CVC*, is an extra code printed on your debit or credit card. With American Express the CVC appears as a separate 4-digit code printed on the front of your card. With all other cards (Visa, MasterCard, bank cards etc.) it is the final three digits of the number printed on the signature strip on the reverse of your card. As the CVC is not embossed (like the card number), the CVC is not printed on any receipts, hence it is not likely to be known by anyone other than the actual card owner.
We ask you to fill out the CVC here to verify beyond any doubt that you actually hold the card you are using for this transaction, and to avoid anyone other than you from shopping with your card number. All information you submit is transferred over secure SSL connections.
* The name of this code differs per card company. You may also know it as the Card Verification Value (CVV), the Card Security Code or the Personal Security Code. All names cover the same type of information.