The meaning of cvn2 security code on credit card: it is the security code of credit card, and it is the security code of credit card when conducting network 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.
The meaning of CVN2 characters: The full name of CVN2 is card verification number 2, which is the security code of UnionPay card. It has three digits, printed after the four digits of the card number on the back of the credit card.
Credit card security code is the security code of credit card for 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.
CVV password verification means that commercial banks add the verification code of self-defined algorithm to the bank card number coding rules and magnetic stripe data format they use, and the related bank cards are also called CVN bank cards. CVV information is stored in the track of magnetic stripe bank card. According to the information such as card number, track main account number and logo code of issuing bank, it is encrypted by special encryption algorithm defined by each bank, and every step is encrypted by CVKA technology to get verification code.
The validity period of a bank card refers to the final use period of the bank card, after which the bank card will be invalid. The expiration date will be printed on the front of the credit card and marked below the credit card number. The standard format is one month before and one month after. For example, 08/ 16 is displayed on the credit card, indicating that the credit card is valid for August 20 16.
Some cards only show the expiration time, while others show the interval between issuance and expiration. If the number below the card number is an interval, such as 02/ 10-02/ 15, it means that the card was issued in February 20 10, and will expire at the end of February 20 15. In the month when the credit card expires, you can apply to the bank for a new card. After the new card is collected, the old card will be invalid.