7 ms·
Modern fingerprint readers rely on the conductivity of your finger, so a cut off finger (or the finger of a dead person) can't per se unlock a phone.
by TheLML 7y ago
Modern fingerprint readers rely on the conductivity of your finger, so a cut off finger (or the finger of a dead person) can't per se unlock a phone.
- immad 7y agoA dead persons skin is still conductive.
- Laforet 7y agoThere are better ways to detect whether the finger is still attached to a live person. https://www.newscientist.com/article/mg21128225-100-fingerprint-scanner-to-spot-the-living-dead/ https://www.newscientist.com/article/mg21128225-100-fingerpr... Nevertheless it probably won't ever be completely reliable short of installing a hypodermic needle with the sensor to take a blood sample every time :)
- war1025 7y agoWas it GATTACA where the main character used a prosthetic thumb add-on to fool the blood check every day on his way in to work?
- djsumdog 7y agoYep, fake hair samples and fake blood patches under the skin. There was a lot of detail written into that movie.
- rhizome 7y agoAndrew Niccol is so good!
- covercash 7y agoAnd Demolition Man where he used an eyeball on a pen to fool the optical scanner.
- tracker1 7y agoI changed it... illuminate... deluminate...
- djsumdog 7y agoWell this escalated quickly.
- TheLML 7y agoYes, but only for a while.
- robin_reala 7y agoThe under-screen ones are ultrasonic as far as I’m aware.