I hope that these things don't periodically switch from showing the actual products & prices to showing a full-screen ad for something. A movie theater near me does that with their screen-based menus. Very annoying to be trying to decide what you want and suddenly have the menu vanish.

It's a bit sad to think how wasteful these are. Not just the waste produced by producing the screens and powering them all day, but the fact that you can't reliably see what's in there by looking means people will just learn to open it and browse with the door open, letting the cold air out.

Edit: Also, does anyone know what the cameras are for, if not facial recognition or CCTV? I'm guessing it's eye tracking for market research. I suppose that could be anonymized and aggregated on-device in a privacy-preserving way, but you'd have to take their word for it.