CCV2 code, also known as credit card security code, is the security code for credit card transactions. The signature usually printed on the back of a credit card is the last three digits in italics, which is used to prove that the payer has a credit card at the time of transaction, thus preventing credit card fraud. CCV2 code is equivalent to the ID card of a credit card, and the cardholder can use this code for consumer transactions.

The role of credit card CCV2 CVV2 is the security code of credit card in online or telephone transactions, and its importance is almost equal to or even more than password. CVV2 is usually used to prove that the payer holds a credit card at the time of transaction.

The CCV code on the back of a credit card (also called the last three codes) is an important element of online transactions. Get the card number, expiration date and the last three codes, and you can swipe your card online as your own. The password of any issuing bank is only applicable in China, and foreign websites do not need a password to swipe their cards.

Play the role of verification