Ah, never seen those. I don’t think we have anything like that over here in the Netherlands. You just scan the barcodes and put it in your bag. Alternatively you can grab a handheld barcode scanner at the entrance and just scan and put the stuff in your bag as you shop.
It’s another way billionaires are taking away power from the common people. They are donating money and reducing their taxes by doing so. What it effectively means is that instead of the democratically elected government deciding on what causes that money is spent on, the billionaires get to decide instead.