The last three digits of the signature line on the back of the CITIC Bank bank card are the credit card security code.

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.

The generation method is that the bank extracts the card account number, validity period, and service code, arranges them, and then calculates them through a series of complex algorithms. After this set of numbers is generated, only the issuing bank and the bank card holder know what the number is.

Extended information

CITIC Bank credit card installments are as follows:

1. Shopping mall installments

Cardholders go to shopping places, such as Shopping can be done at the "mall" where installments are available. When checking out, please show a credit card that supports installment payment in this shopping mall and indicate that you need to pay in installments. The cashier will swipe the card on a dedicated POS machine according to the number of issues required by the cardholder (such as 3 issues, 6 issues, 12 issues, etc., a few shopping malls support 24 issues).

2. Mail order installment

Cardholders receive the installment mail order catalog manual sent by the card-issuing bank (or the bank's online installment mall) and choose from limited products. Then order through the online installment mall, call or fax the mail order installment application form, etc. to the bank for installment mail order.

3. Bill installment

Basically all card-issuing banks can support this installment method, and the application is simple. Users only need to submit an installment application to the card-issuing bank by phone or other methods after swiping their card for consumption and before monthly bills are sent. However, it should be noted that each bank will stipulate some special cases. For example, speculative card swiping will not be successful in installments.

Baidu Encyclopedia - CITIC Bank Credit Card

Baidu Encyclopedia - Credit Card Security Code

CITIC Bank - Credit Card How to check the validity period of the credit card and the end of the signature field on the back of the card Three digits