Very interesting article in NYTimes on July 26 about the use of facial recognition by both police and protesters in Hong Hong. Apparently police now carry cameras on poles; presumably for facial recognition:
"On Sunday, as another demonstration turned into a violent confrontation with the police, some of those involved shined laser pointers at police cameras and used spray paint to block the lenses of surveillance cameras in front of the Chinese government’s liaison office. Riot officers carried cameras on poles just behind the front lines...."
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