Someone's already using Vive's Lighthouse for DIY positional tracking

The best thing that came out of the last generation of consoles wasn't actually a video game, it was Kinect. Microsoft shipped millions of units of this weird sensor, and then hardly anybody made games for it. But hackers and roboticists turned Kinect into a whole giant leap for machine vision.
Now it's time for another hacker-led breakthrough, and this time it's all about precision. The HTC Vive does positional tracking with two IR-blasting "Lighthouse" boxes, and an assortment of photodiodes o