True, but that's only half the deal. Valve opened up access and the research to their lighthouse tech, but it requires sensors on the device for orientation.

True, but that's only half the deal. Valve opened up access and the research to their lighthouse tech, but it requires sensors on the device for orientation. I don't think the existing Rifts have these sensors so room scale VR may be something they're just not able to do. This is a pretty big disadvantage.