ImmerSight Positional Tracking for Any HMD, Solution for Oculus Rift?
Full-body tracking on Oculus Quest with Antilatency tracking system - YouTube
Developer Sticks Vive Tracker On Oculus Rift, Enables Foot Tracking
Why eye tracking could make VR displays like the Oculus Rift consumer-ready | Ars Technica
Amazon.com: KIWI design Tracker Straps and Belt for Full Body Tracking VR, Compatible with Oculus Platform and SteamVR, Upgraded Hand/Foot Trackerstrap Accessories Fit HTC Vive Trackers (1 Belt and 2 Straps) :
Amazon.com: AMVR VR Tracker Straps Accessories, Adjustable Full Body Tracking VR Hand/Foot Straps for HTC Vive Tracker (1 Tracker Belt + 2 Palm Straps+2 Foot Straps, Vive Tracker NOT Included) : Cell
The most affordable body tracking for VR (watch the demo) - 360 Rumors
How do common virtual reality tracking systems work?