Valve is solving virtual reality’s input problem

Engadget: Among the handful of announcements Valve made at this year's Game Developers Conference was a subtle and hugely important one: Lighthouse. What in the world is Lighthouse? It's the "base stations" referenced in Valve's VR headset announcement, and it's even more important than the incredibly impressive headset. Valve president Gabe Newell compares it to USB and expects it to fundamentally change how people interact with virtual reality. "Now that we've got tracking, then you can do input," Newell said in an interview with Engadget this morning. "It's a tracking technology that allows you to track an arbitrary number of points, room-scale, at sub-millimeter accuracy 100 times a second."