Open hardware/software project for IMU-based FK full body tracking, e.g. similar to perception neuron. Take a bunch of off the shelf gyros/magnetometers, tie them to joints on the body, connected with rj45 cables, do forward kinematics to guess at body pose. https://chordata.cc/

Looking at some of the other demo videos in their blog, it doesn't look like they do root motion at all, e.g. dead reckoning moving around in space. But the fact that they packaged up the hardware nicely is promising and they have a working implementation for actually getting the pose into blender. Fusing the data with headset/hand controllers would be possible.

Their kickstarter for 15 sensors (3 per limb, and I guess head + chest + hip) works out to ~$60 per sensor, which feels high on strictly components (I think the IMU they're using is about $30 itself on a breakout from sparkfun/adafruit). Still though, doing all the integration and straps is worth something. I'm on the fence on buying it myself. It's definitely more real than the hivetracker meme, and cheaper than perception neuron, or buying 15 vive trackers.