By 2017 there could be 7 trillion wirelessly connected devices and objects — about 1000 per person.
Personally, I think their timing is off: I can believe that the hardware can be built by 2017, but not that we figured out how to manage or use them. But regardless of the exact date, it’s going to happen sooner or later.
Look around where you are sitting right now. With this vision, in a few years, at least a hundred should be in sight right now.