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Eh... fingerprints are quite a bit simpler than faces. They're just patterns. I don't know how you could detect a fake fingerprint. You'd need something that co
by CountDrewku 5y ago
Eh... fingerprints are quite a bit simpler than faces. They're just patterns. I don't know how you could detect a fake fingerprint. You'd need something that could tell there wasn't real skin on the device. I would say warmth but obviously he has the fake skin over his actual thumb so it's probably still warm.
- GuB-42 5y agoYes, I really meant fake fingers, not just fake fingerprints. And there is plenty of research on that subject. Possible ways of detecting a fake fingerprint (beside warmth): - Blood (we could use one of these cheap SpO2 sensors) - Capacitance - Perspiration and related skin resistance - Microscopic skin details And the usual machine learning solution of feeding thousands of real and fake fingerprints to a neural network and letting it decide. As all living things, fingers are far from simple, there are plenty of details beyond the obvious pattern. It is a bit like a banknote, you can photocopy a banknote and it is very east to identify the banknote you copied. But it is very hard to pass it off as a real one to someone who knows where to look.