Walmart near me has started using receipt checkers lately and they don’t even really do their job, it’s kind of a gimmick really. They just look at the receipt for a second Don’t even look at your cart, but they stop you every time. It’s just such a waste of my time when I’m in a hurry. I had one person even tell me that it was required by law. No it’s not! There’s no law in the USA that says they have to check your receipt.
Security theater, just like the TSA. They don’t need to stop bad actors, they just need to convince their shareholders that they are taking action against losses.
It does work as it plays on your subconscious self.
Same thing with stuffed police men and parked police cars.