It is pretty common to be prompted to tip by the PoS system in any place you can buy made-to-order food. This includes stores that are normal retail stores but

It is pretty common to be prompted to tip by the PoS system in any place you can buy made-to-order food. This includes stores that are normal retail stores but also have some sort of made-to-order food. Like a fancy wine shop or gourmet food store that also sells sandwiches. But this isn't really a new phenomenon either. It's just that there used to be a tip jar sitting by the register, but now the PoS system prompts you because nobody carries cash anymore.