[intopieces]

>It worked in Self checkout at grocery stores.

It's still too soon to say those self-checkout machines are a success. There are a few stores (Albertson's, Costco) that have eliminated them entirely, a few large retailers have scaled them back.

Mostly, the assumption was that ringing up items is easy enough for even untrained customers to do it, and that assumption has proved only partly correct. Every time (and I do mean every time) I've stood in line to use them, 1+ customers have needed assistance from a worker (alcohol, voiding an item, price discrepancy, item won't scan, can't find the picture, weird detection on the bag-side...).

Maybe when the generation that grew up with iPads becomes the eldest we'll see full self-checkout implementation, but for now the average customer is not equipped to effectively utilize the technology.

[throwaway2016a]

That's interesting. Here if I'm waiting in line it's usually in a situation where the human checkout counters have lines as well. I like the Walmart model... here they have six self-checkouts but one line. So if you're first in line you go to the first one that frees up. Very much superior to having one line per self-checkout.

And in those situations if one backs up you still have at least one alternative that is faster.