WaWa in Philadelphia put touch-screen terminals in their stores about ten years ago, or maybe more.
I’m told that one of the reasons they installed them is because they couldn’t find sandwich people who could read and write.
Years ago a big convenience store chain in my town replaced its older female (American) deli workers with imported Hispanics; you would touch a screen to construct your sandwich, and the “replacement American” across the counter would make the sandwich (without a word). As far as I can tell, it is either showing up in Spanish or with pictures (since many of the replacement Americans from south of the border are illiterate in Spanish as well).
They were the low-cost alternative to American workers...
Back in the '90s I worked at a tobacco factory as a programmer. Some of my buddies, who programmed touch-screen terminals, said the company went this route for the same reason. A lot of their employees came from the hills in Kentucky.