Where is the most convenient place to park in Suzhou center
It's very simple, because the password you set is just the payment password, and the "scanning gun" used in supermarket is another way of payment, so the password doesn't work. The payment password we set is the payment password, which is usually entered by the consumers when they pay actively. The scanning gun used by the supermarket is the way of collection. The consumers need to provide the payment code. The payment code has the advantages of short time, convenience and quickness, so the supermarket will use it
many people may not understand the payment QR code. In fact, the payment QR code is developed by the software side. Based on the equivalence ratio of electronic currency and legal tender, they have developed this mode. The QR code generated by each opening of the payment code is different and has a short time limit. If it is not used immediately after opening, the QR code will be invalid, And the QR code will be invalid after payment. Therefore, when we show the QR code to the cashier, it means that we have entered the password, which is just hidden in the QR code information. When the cashier scans the code for payment, it is actually identifying the payment password and collection amount through the system. This kind of confidentiality measures are implemented inside wechat payment. The cashier doesn't know your real payment password. As long as you don't show your payment code at will, no one can use your payment code for consumption, so there's no need to worry too much. If you're worried, this function can be turned off by itself. If you don't turn it off, In the future, it's better not to provide payment code for the other party