Is it suitable for tobacco and liquor stores to install POS machines? I don't know much about this thing. Have you ever used it? thank you

Generally, there will be no security problems when purchasing and installing POS machines from banks, and you don't have to worry about being cheated, so you can operate skillfully. You can use POS machines in tobacco and liquor stores, but you should pay attention to profits, because you need to charge a handling fee for swiping your card. You can't pay the expenses from the guests, you can only bear them yourself. So if you use a POS machine, you can set a limit, such as how much you can buy before you can swipe your card. That's enough.