Ask HN: Smarthouses startups – state-of-the-art?

It is somewhat a ready-to-boom (or fail?) area and there're already hundreds of startups, all ready to turn your lights on (but only after you press a button in their application on your iPhone.) So I wonder who are the serious players and what is the state of the art of what's possible today? Is there anyone supporting a lot of devices (maybe even supporting many standard busses)? Is there anyone with zero configuration (who can learn itself about the available sensors/actuators/… in the vicinity)? Anyone with working non-trivial scenarios (just as an example — who knows your position and can track your movements)? Also what do you think is technically possible but noone has bothered to implement properly?