The use of POS machines is not only the patent of a few merchants, but now more and more merchants begin to use POS machines for settlement, mainly including:

1. Restaurant: Restaurant is one of the main use scenarios of POS machines, including restaurants, snack bars, cafes and bars. These merchants can collect money, order food and manage orders through POS machines.

2. Retail stores: Retail stores are another major use scenario of POS machines, including supermarkets, shopping malls and convenience stores. These businesses can carry out commodity sales, inventory management, membership management and other operations through POS machines.

3. Service industry: Service industry is also an important application scenario of POS machines, such as hotels, tourist attractions and cinemas. These businesses can manage tickets and reservations through POS machines.

4. Medical industry: Hospitals, pharmacies, beauty salons and other businesses can also use POS machines for charging, booking, membership management and other operations.