I worked in a store in the early 90s with the registers set up that way. It is so much more efficient to pick directly from a cart so you can plan the best sequence of items for bagging. The IBM scanners of the era were much faster and more reliable than today's garbage. You could blast through, pulling items out with the right hand, tossing into the left, and blind scanning while reaching for the next item.
Seems to be a common thread in the past 20 years. The ergonomics of the product is garbage now. Partly because more compute is put into them, and with it comes bloated software that seems to be written by people who don't understand that their avoidance of "premature optimization" is just stealing people's lives by making the work go slower.
Where I live we are behind that point now, as in everything is OK and working fast again. Though sometimes it happens that when a cashier opens a new line, and the POS-thing boots for the first time that day, showing some update process running under Windows and makes my day, because I can't stop giggling.
Anyways, it's good for the cashier too, because time for smalltalk, maybe sipping some drink, or such.
