This keeps me away from these sorts of stores if I can avoid them, which is pretty much always (so far, anyway). I would be absolutely shocked if the error rate was comparable to a normal checkout process and I don't want to waste the cognitive overhead of either wondering how much I'm getting ripped off by a corporation or having to go back and review and try to resolve overcharges.

They pay the most for human involvement. Wages, special conditions, and insurance are exponentially higher than their plans of warehouse to end-user via lockers and drones.

You can use the Apple Store app to purchase physical items at Apple retail locations (smaller items like cables or cases). I've used it a couple of times, and I feel very awkward using it, so much so that I'll walk out kinda waving the receipt/acknowledgement screen around so that staff/security can hopefully see I'm not nicking something.

Here in Germany, the newer generation self checkout terminals are fine. I use them all the time. No issues. The first generation ones were terrible.

The issue with the first generation was that they were too strict with bag placement, weight sensors, etc. They were impossible to use without having to call a very grumpy shop attendant to unlock them. Sometimes multiple times. They were grumpy because all this was technically user error but when a largish percentage of users run into the same issues over and over again, it gets really annoying to deal with.

They fixed most of the glaring UX issues with the newer generation. No weight sensors. No prompts to put the item in the bag it is already in, etc. The new ones basically only need people to unlock things like alcohol purchases, but are otherwise fine. The first generation was over engineered and had way too many failure modes. They still have them in some super markets but they are getting replaced with better ones.

Anyway, it's getting harder and harder to hire staff for supermarkets. These are low wage jobs and most of these people can get better paying jobs. Self checkout creates some opportunities for shop lifting of course. But that is offset by the wage savings. They compensate with security, cameras, etc.

Self checkout is fine, if the happy path works. If everything scans once and doesn't accidentally scan a second time, if everything scans at the price you thought it was posted for, if you don't have any controlled substances requiring approval, if the weight sensor doesn't freak out incorrectly or from putting your bags on it, if it accepts any coupons you have, if it accepts and processes your payment method correctly.

If everything goes fine, self checkout is fine. But the exception handling process for any of those is thoroughly aggravating, as you wait and try to get the attention of the one overworked attendant dealing with a dozen of these machines constantly throwing exceptions, as the computer screams at you for whatever it thought you were doing wrong.

If you find value in it, that's fine. I not only find value with interaction with the lovely checkout people, I dislike the cost of scanning and managing the items during checkout being my problem so a huge company can save money. If they were to implement a discount as a way to say "we'll pay you for your work to give us your money" I would consider it.

That's not to say the value of the convenience is never worth it. I exclusively use Sam's Club scan-and-go because the time I save is much larger than the publix/walmart/ect.

I think the idea could work well but the execution in the field was consistently very poor. There were a few of these at airports with just an intimidating gate and generally non-engaging human standing there.

It was as if they expected everyone to know what to do, but when I’d watch 99% of people just sort of looked at the store, saw the odd gate things, and then just shrugged and walked off. The stores were almost always completely empty amidst a busy concourse.

Even if the tech worked (reports say it didn’t work well) they completely missed the boat on creating a clear customer experience that navigated the new tech.