The CVV2 code in a credit card is a number printed in the signature area of ??the Visa/Master Card card. It is the 3 digits after the credit card number. The last three digits we usually see on the back of credit cards are actually CVV2, not the CVV code. In addition, the cvv2 code, also known as the credit card security code, is a security code used in credit card transactions, which is equivalent to the credit card's ID card.

The cvv2 code is equivalent to the ID card of a credit card. We can use the cvv2 code to conduct consumer transactions. No password is required for shopping on overseas websites. As long as the buyer provides an account number and security code, the transaction can be completed. In There are also domestic merchants that have signed contracts with banks, allowing them to complete phone transfers without the need for a credit card password and only with a security code.

Cardholders can stick the CVV2 code with an easy-to-remove sticker, or apply several layers of correction tape to prevent leakage. These three digits are very important and it is best not to scratch them off, because the existence of this code is directly linked to the authenticity of the credit card.

At the same time, you should also fully protect your credit card and try to keep the card close to you. Do not let the credit card leave your sight when making purchases. Do not hand the card to the clerk for checkout to prevent the card information from being viewed by outsiders.

Bank cards refer to credit payment instruments issued to the public by approved commercial banks (including postal financial institutions) with all or part of the functions of consumer credit, transfer settlement, cash deposits and withdrawals, etc. Bank cards reduce the circulation of cash and checks, allowing banking business to break through the limitations of time and space and undergo fundamental changes. The application of the bank card automatic settlement system will make a "checkless, cashless society" a reality.

Reference: Baidu Encyclopedia-Bank Card