[DoingIsLearning]

Is it doing something fundamentally different from what everyone else is doing (infrared light source, do some flavour of pupil segmentation and pose estimation)?

Is the eye-tracking performance/accuracy step change on Apple's headset purely just a software/algo change? Or is it actually using a new principle/apparatus for eye-tracking?

[ladberg]

I don't think there's anything revolutionary, just a lot of parts working very well in tandem:

- Multiple cameras per eye, and at a very short distance from your eye

- The screen is fixed relative to the cameras for all devices, there's no worry about that half of the equation getting off calibration or differing for every customer

- OS is built around eye tracking, which means there won't be any actions that are unnaturally hard to perform with eye tracking