I am of mixed emotion about them. I see their benefits for small, simple orders, but there are just too many ways for something to not work.... including having to look up produce varieties, having to constantly "clear the belt" to the bagging area, having 4 (four) different input devices/screens when you go to identify yourself & pay & having to endure that 'female' voice yelling at me if I don't place things exactly where 'she' demands.

I suppose IF I used one every time, I'd get better a coping, but as a former grocery checker, I have ...ummmm... opinions... about how it should work. With a little planning, I can find a line with a clerk I trust and can ask questions and get help bagging.