Ordering by scanning code in a restaurant means that customers scan the QR code on the dining table or menu with their mobile phones or other code scanning tools in the restaurant, and order the required food and drinks through the mobile phone application. In this way, customers can see the dishes available on the menu, choose their favorite foods and drinks, and then add them to the shopping cart and complete the payment. Finally, the waiter will send the food to the customer's table.

Compared with the traditional manual ordering method, scanning code can reduce the communication between customers and waiters, reduce the work pressure of waiters, and be safer, more convenient and faster. At the same time, scanning code can also provide more information for restaurants, such as customers' preferences and consumption habits, which can help restaurants better market and recommend dishes.

At present, there are many softwares that scan code and click, such as sending treasures, visiting the US group, being hungry, and so on. Generally, in addition to the function of scanning code to order food, there are also functions such as membership management, statistical marketing activities and multi-social platform marketing.