> combined infrared and regular cameras "infrared camera" is falling quite a bit short of a description. In fact some have used a single IR emitter to light th

> combined infrared and regular cameras "infrared camera" is falling quite a bit short of a description. In fact some have used a single IR emitter to light the face up in the dark and/or as a trick to ignore surroundings but then it's not much better than a picture. Here it's an IR dot projector whose projection gets captured by an IR camera and subsequently extruded as a 3D volume, Kinect-style. I don't know about what Windows Hello mandates for face recognition though (also, it can be iris or fingerprint as well as face, which just makes things more confusing).