Completely ridiculous looking, but it does full face/eye tracking, wireless PCVR and valve index controllers, OLED screens, and now has the facial haptics like PSVR2 : r/virtualreality
Eye tracking for Bigscreen Beyond with EyeTrackVR
EyeTrackVR. DIY Eye Tracking for VRChat. Eye Tracking for Oculus Quest 2 | Valve Index
VIVE Focus 3 gets Facial Tracker, and Eye Tracker | VIVE Blog
7Invensun reveals high-quality eye-tracking VR accessory for only $149 - The Ghost Howls
7Invensun reveals high-quality eye-tracking VR accessory for only $149 - The Ghost Howls
Prototype VR Hardware Photos From Valve's Index Briefing In Bellevue
Vive Facial Tracker Can Work with Index and Other PC Headsets