Mobile sales registers are becoming increasingly popular, especially for small businesses and offline services. The ability to accept payments directly from your phone or tablet greatly simplifies the process. In article
https://www.ibusinesstalk.co.uk/small-business-guide-to-easy-payment/ , I read what options there are and how they help companies work faster. There are many useful examples, and everything is explained without complicated terms. I advise you to read if this topic is interesting.