1. The meaning of the cvn2 anti-counterfeiting code on the credit card:

It is the credit card security code, which is a security code for the credit card when conducting online or telephone transactions. It is usually a 3 or 4-digit number printed on the credit card, and the location of the printing will vary on different types of cards. It is often used to prevent credit card fraud by verifying that the payer owned the credit card at the time of the transaction.

2. The meaning of CVN2 characters:

The full name of CVN2 is CardValidationNumber2, which is the security code of UnionPay card. It has 3 digits and is printed flat on the signature line on the back of the credit card after the 4 digits of the card number. After the location.

Extended information

The credit card security code is a security code for credit cards when conducting online or telephone transactions. It is usually a 3 or 4-digit number printed on the credit card, and the location of the printing will vary on different types of cards. It is often used to prevent credit card fraud by verifying that the payer owned the credit card at the time of the transaction.

CVV password verification means that commercial banks add custom algorithm verification codes to the bank card number encoding rules and magnetic stripe data formats they use. The relevant bank cards are also called CVN bank cards. CVV information is stored in the magnetic track of the magnetic stripe bank card. Based on the card number, track master account number, card-issuing bank logo code and other information, it is encrypted through a special encryption algorithm customized by each bank. Each step is encrypted using CVKA technology to obtain the verification code. .

Printing position:

1. The security code of the VISA card is called CVV2 (CardVerificationValue2). It has 3 digits and is printed flat on the signature column on the back of the credit card at the last 4 digits of the card number.

2. The security code of MasterCard is called CVC2 (CardValidationCode2). It has 3 digits and is printed flat on the signature line on the back of the credit card at the last 4 digits of the card number.

3. The security code of DiscoverCard is called CardmemberID, which is a 3-digit number and is printed flat on the signature line on the back of the credit card.

4. The security code of American Express is called CID (CardIdentificationNumber). It has 4 digits and is printed flat on the front of the credit card above the credit card number.

5. The security code of ChinaUnionPay is called CVN2 (CardValidationNumber2). It has 3 digits and is printed flat on the signature line on the back of the credit card after the last 4 digits of the card number.

6. The security code of JCB card (JapanCreditBureau) is called CAV2 (CardAuthenticationValue2). It has 3 digits and is printed flat on the signature column on the back of the credit card at the last 4 digits of the card number.

The credit card security code is equivalent to the credit card’s ID card. We can use this code to conduct consumer transactions. Shopping on overseas websites does not require a password. As long as the buyer provides an account number and security code, the transaction can be completed. In China, there are also merchants that have signed contracts with banks to complete phone transfers without a credit card password and only with a security code.

So everyone must keep their credit cards safe and keep them out of their sight when making purchases to avoid others remembering your credit card account number and security code.

Baidu Encyclopedia: Credit Card Security Code