alt Hacker NewsNeat idea.
I remember way back in the day, there was some question as to the legality of compelled unlocking of devices; IIRC, it’s been deemed legal to compel a fingerprint, but illegal (under the first amendment?) to compel entry of a password—IIRC, as long as that password hasn’t been written down anywhere.
I gather this is written to that end primarily? Or is there some other goal as well?
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There's also the issue that the device is covered in fingerprints, and if you can build a clean image of the print, you can likely manufacture a gelatin copy of that fingerprint that will work on most fingerprint scanners.
I can't speak to the current generation of Apple fingerprint scanners, but historically iirc you can grab a print, clean it up in Photoshop, print it on OHP transparency using a laser printer and use it like a mould to copy a fingerprint.
The website has some more info on the biometric vs. password debate and legal situation:
While it's true that the legality of law enforcement forcing passwords in unclear, courts can absolutely force you to enter a password even if it's not written down by holding you in contempt indefinitely.
Take it to the logical end - you can tie up / handcuff / sedate / restrain an individual in order to get their fingerprint (or, ahem, way worse) but you cannot extract a password from someones brain.
I wrote this after the case of a Washington Post reporter, Hannah Natanson, was compelled to unlock her computer with her fingerprint. This resulted in access to her Desktop Signal on her computer, revealing sources and their conversations.
https://www.yahoo.com/news/articles/washington-post-raid-pro...
Edit: I've a lot more details about the legality and precedence on the apps landing page https://paniclock.github.io/