The credit card CVN2 code (CVV, CVV2) is the last three digits of the seven digits on the back of the credit card. It is also called the credit card security code and the last three digits. The credit card validity period is displayed in XX/XX format on the front of the card, below the credit card number.

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.

The meaning of CVN2 characters: The full name of CVN2 is Card Validation Number 2, which is the security code of UnionPay cards. 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.

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. .

The bank card validity period refers to the final period of use of the bank card. After this period, the bank card will be invalid. The expiration date is printed on the front of the credit card and is marked below the credit card number. The standard format is month first and date last. For example, if the credit card shows 08/16, it means that the credit card is valid in August 2016.

Some cards only show the expiration time, and some cards will show the interval between issuance and expiration. If the number under the card number is an interval, such as 02/10-02/15, it means February 2010. The card is issued monthly and expires at the end of February 2015. When the credit card expires in the month, you can apply to the bank to send a new card. Once the new card is received, the old card will be invalid.