This is exactly the kind of discussion that needs to be taking place in this industry, which has lagged far behind most in terms of adopting modern IT solutions. Of course, the post is talking about the (very) long term, but these ideas have to start brewing somewhere. No doubt that in the distant future, all of this technology will be widespread and more importantly, cheap. And yes, it would be cool!
The patient routing functions described in the article could more easily and cheaply be done using RFID tag technology. Basic data collection could be done by the patient walking across a scale in a doorway, and placing a hand in a (new) device that could take temperature, and blood pressure, as well as blood and sweat samples. This all needs to be connected to a network but it doesn't require more expensive visual recognition technology.
As for recognizing what a doctor is doing by watching I find that more wishful thinking than practical. Sure it would be cool but I don't see it being the most economically feasible given the complexities involved