ignore the label on the tracker, it's from when you had to have trackers tagged correctly in steamvr for FBT to work
was getting a little disappointed with tracking drift between WMR and steamvr (for the index controllers) and started looking into alternate options. while the system of "print a vive tracker mount, attach it to the headset, trick steamvr into treating that as head tracking" has existed for a while, it feels really flaky and like the sort of hack i'm not interested in.
but good news! while OpenVR Space Calibrator, the tool you use for doing the Tracking Universe merge, hasn't been updated since march, there's a fork (soon to be official) that adds Continuous Calibration, giving the same general results of "we're using a vive tracker for headset tracking" by making micro-adjustments to the relative coordinate space. and so far it works fucking GREAT. i did end up printing a mount for the tracker, but it also worked fine just taped to the top of the headset.
so once again we must answer the question: should you do this? should you combine a reverb g2 with index controllers, merging the steamvr and WMR tracking universes to get full body tracking or whatever other bullshit?
probably not. unless you already own the majority of the pieces (in my case: index controllers, vive base stations, vive trackers) this is prohibitively expensive and not a great idea. you should probably just wait until valve (hopefully) announces a gen 2 index.
