How much is the loss really, in the grand scheme of things? Article says 23% of losses are self-checkout and theft, but what's the percentage of losses overall?
Because I'm pretty sure the overwhelming majority of people scan their items correctly. My local stores don't even bother enabling the scale on those machines.
IMO it's got to still end up cheaper than switching back to rows of cashiers, and self checkout is so much nicer and faster. I check my groceries out in less than a minute usually.
Or, if it's such a big problem, maybe they can license the tech Amazon uses for their physical stores. Literally grab what you want from the shelves and walk out and it knows what you took and bills you.