Take Keyue's QR code scanning to order food. After the guests come in to take the seat, they will be guided to scan the code to order food, add dishes and pay online. The kitchen will automatically print the receipt, or the customer will scan the code to order food, and the kitchen will automatically place an order. There are two ways for catering businesses to choose. Scanning code means membership, at the same time, it can expand the number of users, accumulate fans for the store, save the time of waiters and improve work efficiency, thus promoting the brand image for the store.