This is an old thread, but for the first time, my son and I used a smart cart at Shop Rite, as we were asked if we wanted to try it.
It had 4 cams that I know of, looking at things that went in and out of the cart. And the floor of the cart was a scale. I did have trouble removing items as yes it detected them, but it got confused on what the item was, as I had placed 8 bags of chips into it.
A good thing was I could see on the display that I was getting porterhouse steak for $7.99/lb, on all 3 packages. This was a sale price plus a digital coupon (I hate them, especially when they don't get applied and have to go back to the courtesy desk).
It never occurred to me that it may be recording us the entire time, to make sure we're not shoplifting.
I could not really see the advantage to it, other than to be certain discounts and digital coupons were applied. Yes, I would use it again, but it doesn't seem any faster and what is unclear to me is how can a person use a cart to bring things to their car, other than to transfer the items, as the cart doesn't leave the store (and they have a security guard watching).
When I looked them up, everything seemed to revolve around shrink and eliminating jobs lol so what's in it for the customer...
https://www.caper.ai/