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Ask HN: How fingerprints can be used as evidence?
1 point by finchisko on Nov 7, 2017 | hide | past | favorite | 2 comments
How fingerprints can be used as evidence when apple claims its touchid is only 1:50000 accurate?


1:50000 is not the probability that two fingerprints are identical, it’s the probability that whatever features Apple’s TouchID extracts from a fingerprint are identical.

Also, we accept way more noisy data as evidence, too. For example, blood group data may be used to push a case “beyond reasonable doubt”


Ok. So I wonder what's the probability when police is doing fingerprint test. Is it way more?




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