• Phen@lemmy.eco.br
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    10 months ago

    They do know how it works: it detected a pattern in the difference between fingers and checks that.

    Also this would usually not be needed explained to a jury. If they have the suspect in custody they can just check their fingerprints directly.

      • Phen@lemmy.eco.br
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        10 months ago

        Yeah but comparing a fingerprint to a finger is a simpler test than comparing a fingerprint to another fingerprint and checking if they may be two fingers from the same person.