Safeway has installed receipt-scanning gates at some supermarkets in the San Francisco Bay Area. The technology has already been rolled out at multiple UK retailers, and shoppers are skeptical. A Reddit post from this spring, meanwhile, showed the gates at another Safeway location in San Francisco. Security gates at self checkouts is more common in the UKAcross the Atlantic in the UK, a handful of retailers already use the receipt-scanning gates at self-checkout areas. Some people have compared the security gates to Costco's receipt-checking system.

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