Look at the string of numbers with spaces on the bank card without letters. That's the card number. Spaces are convenient for you to remember. When using the card number, remove the spaces and connect the numbers to form the card number.

the card number of unionpay card consists of three parts: the card issuer identification code (BIN), the custom bit of the card issuer and the check code.

the first six digits from the left of the card number are the card issuer identification code (BIN), which consists of six digits. BIN number is assigned, confirmed and managed by China UnionPay; The seventh digit of the card number is the self-defined digit of the card issuer, which consists of 6 to 12 digits, and the card issuer assigns the value by itself, including the city code and the network code.

the last digit of the card number is the check code.

Extended information:

Bank card refers to a credit payment tool that is approved by commercial banks (including postal financial institutions) and has 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 makes the dream of "no cheque, no cash society" come true.

since the 197s, due to the rapid development of science and technology, especially the use of electronic computers, the use of Bank Card has been expanding. Not only has the circulation of cash and checks been reduced, but also the banking business has undergone fundamental changes because it has broken through the limitations of time and space.

The application of bank card automatic settlement system will make the arrival of a "no cheque, no cash society" a reality in the near future.

card replacement

bank card replacement is because the track information of traditional magnetic stripe cards is easy to be copied, which has potential safety hazards. In contrast, the chip card has key encryption technology, and the encrypted information is generated randomly. Wang Yu, a senior risk expert of China UnionPay, said that there has not been any actual case of counterfeit card fraud caused by copying chip bank cards around the world.

before October 31, 214, all card-issuing banks and acquiring institutions will close the function of using the magnetic stripe card in the chip magnetic stripe composite card in domestic POS channels, and only use the chip to conduct transactions; From 215, banks will stop issuing magnetic stripe cards and only issue chip cards.

Reference: Baidu Encyclopedia-Bank Card