7 ms·
Fingerprint sensors work in the dark. Facial unlock doesn't. Edit: looks like I'm probably wrong on this one
by KZeillmann 7y ago
Fingerprint sensors work in the dark. Facial unlock doesn't.
Edit: looks like I'm probably wrong on this one
- fetus8 7y agoFacial Unlock does work in the dark because it uses IR, and not just a camera.
- angry_octet 7y agoWhich tells you it can be tricked with just the IR picture.
- fetus8 7y agoMind explaining what an IR picture is? Facial Unlocking isn't just using image recognition. Face ID, specifically, using point mapping across a face, creating a 3D map of the face and reference points to unlock the device. I don't think a flat 2D image, even with IR photography, could trick a system like this. A Hollywood grade prop mask of someone's face might be able to trick it, but that seems like a huge outlier.
- dkonofalski 7y agoEven a hollywood mask wouldn't trick it unless it had some way to simulate the temperatures across the face. IR determines the points and the relative temperature to make sure the face is live.
- angry_octet 7y agoI mean that it is not including features from the visible spectrum when making its decision, only IR & time of flight (depth). IR makes it easy to track the eyes (basically all eye tracking systems use IR) but misses skin tone cues. A prop mask is one approach, but adversarial machine learning techniques might be even more effective, especially if you can study the adaption to a particular face.
- Hamuko 7y agoAs long as it's a proper implementation of a face unlock. When the iPhone X came out, OnePlus was quick to jump on the bandwagon and start advertising their new face unlock, which was completely reliant on the front-facing camera.
- iknowstuff 7y agoYes, it does.
- baby 7y agoThis is not true
- AimForTheBushes 7y agoI've been able to unlock my iPhone 11 in nearly complete darkness.
- deleted 7y ago[deleted]
- rumblefrog 7y agoInfrared does not work like that