What is a credit card verification code?

Hello, the verification code is 3 digits behind the back of the card, which is called CVV2 code in the industry. It is a verification code to verify credit cards and protect the security of personal information.

CVC(CardVerificationCode) is an additional code printed on the back of a credit card, also called CVV(CardVerificationValue), which is the verification value of a credit card, and some are called CID, which is a credit card security code or a personal security code. All names refer to the same verification code. Please note that this verification code does not refer to the password of the credit card. Generally speaking, it is possible for domestic credit cards to have passwords, while foreign credit cards do not have passwords. ) the display position is on the back of the credit card, and the top of the signature is displayed in italics. The first four digits are the card number and the last three digits are the verification code.

The credit card verification code is the last three digits on the back of the card; The expiration date is similar to the number on the back of the card: 04/ 18 (month/year) or 18/04 (year/month); The card issuer or its agent shall confirm the allowable frozen amount of the transaction before the deduction of the special merchant.