real time surveillances

I can't speak for what Sandy S. meant, but I can assure you that a "broadcast polygraph" is not planned, nor is it likely to be technologically feasible any time soon.

The basic technology is for position localization, not vital sign reporting, etc. To be sure, a vital signs subsystem could be linked to another system (as could a polygraph, with a lot of effort). But such is not the main intended purpose.

My point was that essentially a (broadcast of vital signs) == (broadcast of polygraph). There's some stuff that's different, but I don't think that it's sufficient to make a real difference. What your friends are current working on implementing, of course, is not (yet) to this point. Paul