The payment code in Alipay belongs to static bar code and some belong to dynamic password.

difference between dynamic bar code and static bar code:

1 static bar code: the two-dimensional code printed and hung at the counter of common restaurants, roadside stalls or shops belongs to static bar code. The QR code is effective for a long time, and the security is low

2 Dynamic barcode: The QR code presented to the cashier is a dynamic barcode when the goods are paid. Because the bar code is constantly updated, it is not easy to be replaced and stolen, so it is safer.

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The difference between dynamic bar code and static bar code:

1 Static bar code: the two-dimensional code printed and hung at the counter of common restaurants, roadside stalls or shops belongs to static bar code. The QR code is effective for a long time, and the security is low

2 Dynamic barcode: The QR code presented to the cashier is a dynamic barcode when the goods are paid. Because the bar code is constantly updated, it is not easy to be replaced and stolen, so it is safer.

Application prospect of static bar code and dynamic bar code:

1 Static bar code can't appear in scenes with high payment due to the limit of payment, such as large supermarkets, shopping malls, hotel restaurants, etc., but it can still be used in small scenes, such as vegetable markets and fruit stalls.

2 the application scope of dynamic bar code will be wider, not only in fruit stalls and vegetable markets, but also in supermarkets, hotels, restaurants and other industries. From the application scenario, static bar code and dynamic bar code appear the scene of "ice and fire".

The dynamic bar code usually needs to be equipped with a barcode scanner, such as a scanning gun and a scanning platform that can realize cash register.

Reference: Baidu Encyclopedia-Barcode