Thanks for this! I've been searching for this simple filter (no in app purchases) for a long time.
Unfortunately, this particular site is Apple only, so I'll have to keep searching for Android counterpart...
You are much faster than a professional cashier? Congrats I guess.
Also the space argument doesn't hold up. The cash register belts are not need on staffed registers if they are not needed on customer slaving ones. So they are approximately the same size minus the chair for one helpful human.