i heard the newer phones have gps built in. that show your location. without the need to triangulate.
On the other hand, and I'm just saying, my experience is that most governments couldn't organize a piss up in a brewery.
Too bad they are spending so much effort watching law abiding citizens while thousands of people on expired work visas from hostile countries can't seem to be located. So the scary thing is not what is happening, but what COULD happen if the wrong leadership takes control. If ol' Adolph had this info available, their wouldn't be a Jew or Gypsy left in the world.