What is the bank card verification code?

The last four digits of the card number on the back of the credit card are the verification code.

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.

Judging from the contract signed between the bank and the customer, the bank requires the customer to replace the original magnetic stripe card with a chip card, which is a unilateral change of the original contract. We should reach an agreement with consumers to minimize the adverse effects on consumers. The bank's card changing behavior will cause many inconveniences to consumers, such as time-consuming and laborious, and the original binding transaction needs to be readjusted due to the change of card number. In line with the principle of customer first, banks try to upgrade by changing cards instead of numbers. [6]?

It should be reminded that although many banks have launched the service of "changing the core without changing the number", it is only for some bank cards and customer groups. A number of banks reminded that the card number will be changed at the same time as the card is changed. What the public should pay attention to is that some businesses previously bound by bank cards need to be re-handled, such as water, electricity, gas, mortgage, car loan and other withholding businesses, as well as bound credit card accounts, Alipay accounts and securities accounts. All must be reprocessed at the first time.