There are supermarkets putting tills back in as the Self Service schemes have been failures theft wise and customer satisfaction wise.
But more and more Self Pay and Pack now have AI identifying the item as you move it from the trolley or basket before you scan it.
Also it has your picture. So Facial recognition will be simple to implement.
As can happen at Fuel Pumps or EV Chargers, car arrives, charger knows the car type, charging type, Reg Number or even the VIN, Registered Keeper, bill whoever.
Pay per Mile.
But then the UK still has no compulsory ID, easy swap Reg Plates, and the ANPR system and IT, Receptions for Communications, Phones, WIFI, Radio that can be crap.
Then crap security of data...