iPhone X basically has a Kinect on the front to enable FaceID

It remains to be seen whether Apple’s FaceID will be as convenient as TouchID (it already failed on stage), but at the very least we can’t accuse Apple of not dedicating enough hardware to the task. The front of the new iPhone X has a full-on depth-sensing system much like that of the original Kinect.

The prominent cutout on top hides more than a selfie camera — it has an array of infrared blasters that locate your face even in the dark and project a network of dots onto it. An IR-sensitive camera watches how those dots are distorted and reflected on your face, producing a detailed 3D mesh.

Whenever you want to unlock your phone, the same things happens again and it just compares the known mesh to the one it’s detecting live. Apple says the chances of two faces being similar enough for the system to mistake one for the other is one in a million.

This IR grid system is very similar to what was developed by PrimeSense for use in Microsoft’s Kinect device, although it has to be said that it’s probably a better use case here than for room-scale tracking. The Kinect, it has to be said, was never particularly responsive.

The Kinect, put out in 2010, has a similar setup.

Microsoft left the dots behind for a time-of-flight system that’s much more accurate but also larger and more complex. Apple’s implementation of the dot grid system is compact and designed for a single purpose, which should make it considerably more reliable.

Of course, you’ll be able to put PIN in if you need to, in case your nose gets broken or you’re wearing a mask. Or if you’re live in front of like a million people and it doesn’t work, like what happened to Craig Federighi a few minutes ago.

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