When I first encountered facial recognition companies in the 1990s and early 2000s, the rules were pretty clear.
Their algorithms needed to identify people by their permanent features, not their temporary ones.
Don’t identify someone by a beard or a lipstick shade, but by what is usually always present: eyes, nose, ears…and mouth.
After all, it wasn’t like people were going to lose their mouths or anything.
Until 2020, when everyone started covering up their mouths.
And the algorithms had to adapt.
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