CVN2 refers to the loading information code that records the customer information on the bank card, and is the security code when the credit card conducts online or telephone transactions. Generally, it is a 3-or 4-digit number printed on the back of a credit card, and the printing position of different types of cards will be different. This is a bank card used for indirect occasions, such as online payment and other transactions. Can identify whether there is a bank card transaction. Usually used to confirm whether the payer has a credit card during the transaction to prevent credit card fraud.

Usually, cvn2 code refers to the 3 or 4 digits printed on the credit card, which is the loading information code to record the customer information on the bank card. Different types of cards will have different printing positions.

The cvn2 code is equivalent to the ID card of a credit card, and it is a security code for online or telephone transactions of credit cards. Cvn2 code is the number extracted according to the card account number, validity period and service code, and then reordered.

1, CVV2, CVC2, CVN2 and CSC2 are all verification codes, which can identify whether there is a bank card transaction. In other words, security codes are often used to ensure the security of payment. Usually the last three digits after the signature on the back of the bank card.

The principles of CVV2, CVC2, CVN2 and CSC2 are the same, but their names are different. It belongs to different card organizations.

2. UnionPay standard card is called CVN2, MasterCard is called CVC2, VISA card is called CVV2, and AE American Express card is called CSC2. CVV2, CVC2, CVN2 and CSC2 are verification codes, which are used by bank cards for transactions in indirect credit card consumption occasions, such as online payment.

The credit card security code is equivalent to the credit card ID card, and we can use this code for consumer transactions. You don't need a password to shop on overseas websites. As long as the buyer provides the account number and security code, the transaction can be completed. In China, there are also merchants signing contracts with banks, but you don't need a credit card password, you only need a security code to complete the telephone transfer.

Therefore, everyone must take good care of their credit cards, and don't let them leave their sight when spending, so as to avoid others remembering your credit card account number and security code. ?

4. Credit card security code is the security code of credit card when conducting online or telephone transactions. Generally, it is a 3-digit or 4-digit number printed on a credit card, and the printing position of different types of cards will be different. It is usually used to prove that the payer has a credit card at the time of transaction, thus preventing credit card fraud.