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Kroger introducing AI at self checkout to lower both accidental and organized crime theft.
(www.thestreet.com)
This is a most excellent place for technology news and articles.
Ignore them.
Unless you are in a store where you are a member (Costco, etc) or are stopped by LP, you don't actually need to hand over your receipt.
Stores do have shopkeepers privilege for stopping shoplifters, but usually it requires witnessing the event directly.
A receipt checker wouldn't witness it so you can usually ignore them.
Bonus, if they try to physically stop you, you due the store