I think you might have a point w.r.t. tracking, but you brought up "RF free". There's next to nowhere on earth you can go to escape radio transmissions comple

I think you might have a point w.r.t. tracking, but you brought up "RF free". There's next to nowhere on earth you can go to escape radio transmissions completely, except a faraday cage or maybe a deep mine. Besides GPS, there's been shortwave radio broadcasts bouncing all over the place for a century.