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What is bank card CVV2?
The CVV2 code in the credit card is the number printed in the signature area of Visa/Master Card Kaka. It is located in the 3 digits after the credit card number. The last three digits we usually see on the back of a credit card are actually CVV2, not CVV code. In addition, cvv2 code, also called credit card security code, is the security code of credit card transaction, which is equivalent to the ID card of credit card.

The cvv2 code is equivalent to the ID card of a credit card. We can use cvv2 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 who sign contracts with banks, but they don't have a credit card password, so they can open an account by phone only with anti-counterfeiting code.

Cardholders can use easy-to-tear stickers to affix CVV2 code, or brush several layers of correction tape to prevent leakage. These three numbers are very important, so it is best not to scratch them off, because the existence of this code is directly related to the authenticity of the credit card.

At the same time, we should also fully protect our credit card, try our best to ensure that the card does not leave our sight when spending, and do not give the card to the clerk to check out, so as to avoid the information in the card being viewed by outsiders.

Bank card refers to a credit payment tool issued by commercial banks (including postal financial institutions) with all or part of the functions of consumer credit, transfer settlement, cash deposit and withdrawal, etc. Bank card reduces the circulation of cash and checks, which makes the banking business break through the limitation of time and space and undergo fundamental changes. The application of bank card automatic settlement system will make "a society without checks and cash" a reality.

References:

Baidu encyclopedia-bank card