>>414927606
You just buy Vive trackers.

All they need to track is to have at least one steamvr basestation turned on in your room

One is usually not enough for 360 coverage, so default is 2 lighthouses in opposite corners. You can have more than 2 for more coverage of the 2.0 lighthouses (Index, Vive Pro, curved front surface) You cannot mix and match 1.0 and 2.0 lighthouses.