Military or medical techie question

[DeadLily]

Does anyone know if there exists such a device that can remotely – that is, away from its’ subject, or even through a wall – detect a person’s vital signs, such as heart rate, breathing rate, and alertness? By alertness, I mean it can tell how awake or asleep a person is. I know the military was working on something like this a while back, but I'm wondering if it ever developed any further, or if some other field picked up on it.

[Xylob the Destroyer]

the tri-corder does not yet exist...

[gadgetguy]

the tri-corder does not yet exist...

Yes it does...
http://www.sphere.mpx.com.au/tricorder.html
Although I believe the company that made them went out of business.

But, to my knowledge, the Medical Tricorder has yet to be developed, but it's getting closer...
http://www.wired.com/science/discoveries/news/2007/07/tricorder

[Abbadon]

Some indian gurus claim to know everything of someone just by looking at them. You could try try using a heat signature viewer, and then process this information through a supercomputer such as Multivac, to find out the rest of the puzzle.