>>392772186
steam vr? infinite as long as you've got usb ports. Sometimes people even use them to track homebrew controllers and headsets.

vrchat? eight:

>Feet
>Knees
>Hip
>Chest
>Elbows + Shoulders (a single tracker will be mapped control elbows and shoulders simultaneously. That tracker must be worn above the elbow)

https://docs.vrchat.com/docs/full-body-tracking