This was the major concern with GPS when it first came out....adds a whole new dimension to “Big Brother is Watching you”.....
I call BS. At worst, this would be an attempted rewrite of history; at best it shows sheer ignorance. GPS, insofar as humans use it, consists of only a passive receiver that reports a 2D or 3D position. Only an very small percentage of receivers integrate any transmission that could be traced externally as, "Here I am!", as do commercial truck company GPS devices.
HF