I started using grocery self-checkouts during COVID, but I've kept using them because there's rarely a line (and I'm a misanthrope). I'd probably go back to using regular human checkouts if I had to dig through all my crap to prove what I bought.
Having said that, I've noticed myself making mistakes. I've accidentally failed to scan an item, and I've accidentally entered incorrect codes for produce. When I notice, I fix them, but I've probably missed a few.
I guess the easiest answer is for grocery chains to reinvest some of those windfall profits and hire more cashiers.
As non American with no self checkout available, what does the recipe check look like? Do you just show them recipe and they briefly look at it before waving you through or do they actually go through all of your groceries cross checking the items?
Because we still have to sometimes show the recipe to the security guards despite not having self checkout. But they don't cross check anything and the procedure takes 2-5 seconds as they sometimes sign the recipe.
LOL. They blindly look at the receipt then hand it back to you. Takes literally 2 seconds, no one is ever questioned because they employees don't care and just need to look like they are doing something. It's totally useless.
I just walk past them. Zero obligation to actually comply
Depends on where you go. For one store I can think of in my area (Sam's Club, run by the same company as Walmart), they've been doing it for as long as I can remember (before self-checkout was even a thing). They've upgraded their receipt-checking process over the years.
Used to be that they'd just look at the receipt, look at what you got (the store didn't and still doesn't have paper or plastic bags for customers to use; customers can bring their own bags). They'd draw a line on the receipt and then draw a smiley face on it for the kids.
Nowadays, they scan a barcode on the receipt and then scan a few items randomly selected by their handheld that are in your cart. I think it's up to three items per receipt.
It's usually just a random employee who glances at the receipt for 3 seconds before telling you to have a nice day. It's basically security theater and I just ignore the requests anyway since there's nothing that will happen anyway.