<groan>
This could take "instant replay" to a whole new level, making major sports events even more torturous that what the current technology has.
Seems to me by the way that the issue here is really just the level of accuracy involved. The last two hospitals I was in have indoor tracking of doctors, nurses and orderlies, I could see the nodes all along the halls. When I asked when my doc was coming by, the nurse looked at her iPad and say "Well, he's one floor below us and moving, so he's probably on his way." That was not likely 10cm accurate, but +- 1m would be good enough for that purpose.
"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington