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"Customers will be able to use a "Smile to Pay" facial recognition system at the tech-heavy, health-focused concept store, part of a drive by Yum China Holdings Inc to lure a younger generation of consumers. "

"The software reportedly could set off a "Uighur alarm" when it pinpointed someone from the minority group. Uighurs are a largely Muslim group, and have been subjected to extensive persecution by the hands of the Chinese government."

"From a practical standpoint, that means government agencies, like the Portland Bureau of Police, cannot use facial recognition software for videos from body cameras, dash cams, or any other form of surveillance equipment."

"A preliminary study finds that facial recognition algorithms struggle to identify people wearing masks. The study tested 89 commercial facial recognition algorithms, and the best had error rates between 5% and 50% in matching unmasked photos with photos of the same person wearing a digitally-applied mask. Masks both lowered the algorithms' accuracy rates and raised the number of failures to process. The more of the nose is covered by the mask the lower the algorithm's accuracy; however, error rates were generally lower with round masks; and the algorithms generally performed worse with black masks than with surgical blue ones. False positive remained stable or declined a small amount."