Officially they are for finding criminals, but how? Fingerprints could be left behind at a crime seen, but how could iris patterns be left behind? Modern day security cameras are not clear enough to capture irises right?
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Actually, modern cameras can detect and measure human irises at quite a distance. It’s just, the cameras needed to do so are prohibitively expensive for mass deployment as security cameras ar your local Starbucks.
But, iris databases are a form of advanced biometrics, and they’re basically impossible to destroy or alter without blinding yourself. It makes it possible to be absolutely sure a person who’s previously been arrested and processed in the database can not conceal their criminal record by changing their name or lying to police about their identity
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