There is no maximum credit card for POS machines. If it is a bank credit card, the maximum amount can be determined according to the user's credit card amount.

If it is a savings card, you can use it directly within the available limit until your limit is used up. If the available limit is negative, it means that your account has been exceeded and can no longer be used.

There is no minimum credit card for POS machines. No matter how much you spend, you can swipe your card, and the customer does not bear any handling fee.

Pos machine:

POS(Pointofsales), which means "point of sale" in Chinese, is called point of sale information management system. It is a terminal reader equipped with bar code or OCR code technology, which has the cash register function of 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.

Matters needing attention when using pos machine to swipe your card:

1. Check whether the amount on the shopping receipt is correct. When a consumer uses a card in a shopping mall, according to the transaction requirements of the bank card, the cashier will ask the consumer to sign the transaction document.

What consumers need to be reminded is that before signing, they must first confirm whether it is their own++,and carefully check whether the amount and currency on the purchase order are consistent with the actual consumption situation. Only when it is correct can they sign it.

2. The operation of credit card is different from that of savings card. In order to make it more convenient for consumers to use credit cards, many credit cards do not need to enter a password when they are used, and the cashier only needs to check the user's signature.

Of course, this convenience also creates some unsafe factors for credit cards. Once a consumer's credit card is lost or forgotten, it is likely to be stolen. Therefore, consumers should be extra careful when saving credit cards, and it is best to protect them as cash.

When banks set debit card consumption limits, almost all said that the move was to ensure the safety of users' card use and safeguard the interests of debit card holders. A banker in Hangzhou said that in recent years, bank card crimes have been on the rise, and various risk problems and criminal activities such as fake card theft, SMS fraud and malicious overdraft have occurred from time to time.

In the absence of a better way, banks can only guard against risks by setting more and more trading limits. The source also said that many criminal gangs colluded with each other at home and abroad. After illegally obtaining the cardholder's++and password information, they++bank cards, and then swipe their cards abroad for consumption or illegally cash out, causing huge losses to cardholders. In this process, most cardholders are unaware of it.