Two characters might have identical Unicode skeletons but render differently in specific fonts, or have different skeletons but render identically in a particular typeface. Detecting this requires rendering glyphs and comparing pixel output. No purely Unicode-data-based approach handles it, and UTS #39 does not attempt to.
Alastair is referring to an incident last October, when Discord admitted official ID photos of around 70,000 users had potentially leaked after a breach at a firm which helped it verify ages.
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Former US F-35 fighter pilot arrested for training Chinese air force
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