In a SHTF scenario, if you're carrying any traceable device you're a fckin dumbass anyway. ALL that shit needs to be removed, placed in a Faraday cage, and left behind.

This means phones, watches (digital bluetooth types), ear buds (blue tooth), etc. Basically if it has a Blue tooth or Network function to it, dont have it on you. The same goes for vehicles: ALL new vehicles have multiple functions that track where it, and you in it, are at any given time.

If you want SHTF safe things, you're gonna have to go old-school: pre-computer controlled vehicles, wind up watches, etc. Even walkies (all types and makes) can be zeroed-in on unless you know how to set up remote temporary chain antennas to throw off triangulation attempts (this is how ISIS did it in the cities in Iraq).