1. After binding the third-party payment platform or bank APP, as long as the merchant and the third-party platform sign a credit card payment agreement, they can scan the code for payment.

2. After binding the credit card with Alipay, WeChat, UnionPay wallet, etc. , scan the payment QR code of the merchant, or let the merchant scan the payment QR code of your Alipay or WeChat or UnionPay wallet. As long as the merchant signs the credit card payment agreement, the credit card scan code payment can be completed.

3. Most banks' own mobile apps can also pay by scanning code, but fewer merchants sign contracts with banks to pay by scanning code credit cards than with Alipay, WeChat and UnionPay wallets.

Extended data:

Credit card, also called debit card, is a credit certificate issued by a commercial bank or credit card company to eligible consumers.

It is a card with name, expiration date, number and cardholder's name printed on the front, and a magnetic stripe and signature strip on the back.

Consumers with credit cards can go to specialized commercial service departments for shopping or spending, and then the bank will settle accounts with merchants and cardholders, and cardholders can overdraw within the prescribed limits.

The credit card stipulated by relevant laws in China refers to the electronic payment card issued by commercial banks or other financial institutions with all or part of the functions of consumer payment, credit loan, transfer settlement, cash deposit and withdrawal, etc.

20 17 12 1, the English translation and writing standard for public services was formally implemented, and the English names of credit cards were specified.

Credit card consumption is a non-cash transaction payment method, and there is no need to pay cash when spending, and repayment is made on the billing day.

Credit cards are divided into credit cards and quasi-credit cards. Credit card refers to a credit card in which the cardholder has a certain credit limit and can spend first and then repay. Quasi-credit card refers to a quasi-credit card in which the cardholder deposits a certain amount of reserve fund according to the regulations, and when the balance of the reserve fund account is insufficient to pay, it can be overdrawn within the prescribed credit limit.

Credit cards generally refer to credit cards.

From the date of 202 1 1 1, the credit card overdraft interest rate is determined by the card issuer and the cardholder through independent negotiation, and the upper and lower limit management of the credit card overdraft interest rate is cancelled (the original upper limit is 0.7 times of the daily interest rate, and the lower limit is 0.7 times of the daily interest rate).

The main features of credit cards:

① Credit card is one of the fastest-growing financial services, and it can replace the traditional cash circulation in a certain range;

② Credit cards have both payment and credit functions. Cardholders can use it to buy goods or enjoy services, and they can also use credit cards to obtain certain loans from card issuers;

Credit card is a high-tech product integrating financial business and computer technology.

Credit card can reduce the use of cash and currency;

⑤ Credit card can provide settlement service, which is convenient for shopping and consumption and enhances the sense of security;

⑥ Credit card can simplify the collection procedures and save social labor;

⑦ Credit cards can promote commodity sales and stimulate social demand.