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Yeah, I never understood how you could hash fingerprints or face unlock data. How do you do a fuzzy match on a hash? I guess you can make the original data less
by OkGoDoIt 7y ago
Yeah, I never understood how you could hash fingerprints or face unlock data. How do you do a fuzzy match on a hash? I guess you can make the original data less detailed/precise, such that slight variations would still come out with the same hash, but that seems to defeat some of the security.
- setr 7y agopresumably you would hash many variations of the initial thumbprint, and then simply compare the new thumbprint hash against the list of possibilities, passing upon finding the first match
- lttlrck 7y agoPerhaps it’s similar to how Shazam fingerprints music. It’s a fingerprint of a fingerprint so to speak.
- MiroF 7y agohttps://en.wikipedia.org/wiki/Locality-sensitive_hashing https://en.wikipedia.org/wiki/Locality-sensitive_hashing