I occasionally use mouse keys, but they're not good for rapid movements. I've always thought that I'd like eye tracking to quickly move my cursor. A few years ago, I bought a cheap Tobii Eye Tracker 5 on eBay. I assumed there would be a Linux driver for this, it's the 2020s! The future is not evenly distributed.
The device has two parts: an IR camera for head pose detection, and a built-in "EyeChip" which detects eyes and predicts where you're looking.
I've finally got both reverse engineered!







