I hate self checkout because they make the system frustrating as if they don’t trust you. Which they don’t. So they make it weigh items and it yells if you’re too slow putting the item in the bagging area.
If you don’t trust me to do it. Pay someone else to do it.
some terminals have 2 or even 3 cameras pointed at you, displaying on the screen so you know for sure they don't trust you. they're probably scanning your face nowadays too so they track individual purchase history
Problem is they save on the humans so you have to do their work too but you don't see any price reduction or benefit for doing so, and that is on top of all the usability issues...