Valve really hit their lighthouse system out of the park. They solved some MASSIVE problems in the location space with it. I wonder what the power requirements of their system are and how much it'll cost? I also wonder what size of room it works on. Would it work in a warhouse? an open field? I imagine it fails outside too (no big deal). I think as long as it works in a well lit office space it's gold.
I have to imagine Oculus uses it too given how closely they work with Valve and how much valve wants other groups to use their stuff.
edit: actually nm, I misunderstood what they're doing. It's just an evolution from IR to laser. Still cool.