Card swiping shows that the cardholder's authentication failed, which means that the machine can't recognize the bank card, or it can't recognize the bank card when handling consumption or other business. If "cardholder authentication failed" is displayed when the customer swipes the card, it may be due to the following reasons:

1.app card opening authentication failed. This situation is generally rare, because you can't open an account with incorrect information when opening a card. If you really encounter this situation, you can call the bank customer service directly, and the other party will find you the specific reason for the failure of authentication.

There is something wrong with the card itself. If the card you are using is a new card, failure to activate it will lead to authentication failure; If it is an old card, the card may be demagnetized or damaged, and the card information cannot be obtained, resulting in authentication failure; In addition, if the password is entered incorrectly for many times, the card will fail to authenticate and even freeze. If the account is locked and the card expires, it cannot be used normally.

3. Card machine problem. If there is nothing wrong with the bank card, it may be that there is something wrong with the card machine itself, and the POS machine has failed to receive the signal; Or the environmental signal of consumer merchants is not good, and the connected network is not smooth. At this time, you can try to change a machine. If this is still the case, you can call the bank.

1.POS machine means "point of sale" in Chinese, and it is called point of sale information management system. It is a terminal reader equipped with bar code or OCR code technology, which has the function of cashier in cash or barter bank. Its main task is to provide data services and management functions for commodity and media transactions, and to carry out non-cash settlement.

2.POS is a multifunctional terminal. It can be installed in special merchants and acceptance outlets of credit cards, and connected with computers to realize automatic transfer of electronic funds. It has the functions of supporting consumption, pre-authorization, balance inquiry and transfer, and is safe, fast and reliable to use. Credit card swipe is divided into bank card swipe and credit card swipe. Credit card swiping is the same as bank card swiping. They all rely on ic card swiping, magnetic card swiping and flash payment swiping. We just need to press OK or 1 to input the amount and then we can swipe the card.