There is usually a transaction authorization number, which indicates that the cardholder agrees to the transaction and pays the corresponding amount to the merchant. Sometimes the POS machine does not print the authorization code because of printing problems.

Early credit card consumption was not connected to the Internet or automated by machines, but was done through the customer's signature and method after pressing the card. The card institutions of each bank in each city are also relatively independent, and credit card consumption is not recorded in real time.

Most consumption activities need to be re-accounted afterwards (that is to say, the merchant has no way to accept the card. To know whether the card is valid and whether the limit is sufficient, you must check with the card issuer to obtain such information).

Extended information:

1. When using a credit card, a signature is required to confirm consumption. Generally, there is no need to show an ID card or enter a password. However, please cooperate when the following situations occur:

Due to operating standards, POS machines in some cities still require a password. Please enter a 6-digit number as you wish. If you are making a large purchase or purchasing easily cashable goods, it is recommended that you enter your accurate personal password for the ATM.

2. When the transaction form needs to be rewritten or canceled due to errors, please ask the merchant to tear up all the original invoices and retain the return certificate given by the merchant to avoid future disputes;

3. After making the payment, please confirm that the credit card returned by the salesperson of the special merchant is indeed your own credit card;

4. After completing the transaction, please keep the cardholder's link for making the payment so that you can contact Check the credit card statement sent by the bank.

Baidu Encyclopedia-Credit card swiping