• Professorozone@lemmy.world
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    4 months ago

    Wouldn’t the phone have to have your fingerprint stored in order to compare it to the one scanned?

    • dev_null@lemmy.ml
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      4 months ago

      Yes, the phone does, but that data is protected in the hardware and never sent to the software, the hardware basically just sends ok / not ok. It’s not impossible to hack in theory, nothing is, but it would be a very major security exploit in itself that would deserve a bunch of articles on it’s own. And would likely be device specific vulnerability, not something an app just does wherever installed.

      • Lojcs@lemm.ee
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        4 months ago

        Pretty sure this is not true. That’s how apple’s fingerprint scanners work. On android the fingerprint data is stored either in the tpm or a part of the storage encrypted by it.