Pos ordering refers to the ordering method of ordering service by using pos machines on the spot. In the dining place, customers can complete the ordering operation by swiping the card and scanning the code through the pos machine of the waiter or cashier, which can improve the efficiency and accuracy, and also facilitate the management and statistics of orders by merchants. When ordering food with pos machine, customers can choose dishes, drinks, drinks, etc. They need to check and enter information such as quantity and amount.