all you people talking about tinfoil hats, just dont do anything. Let them steal yours not mine.
This is like arguing that identity theft is a tinfoil hat conspircy and calling ppl names for being careful wow, just wow.
a faraday bag is about $10 on eBay, your tinfoil hat would work too as long as you completly wrap it, which is hard to do with foil.
These vehicles get stolen then driven quickly into a shipping container and shipped overseas. Stolen vehicles are rarely recovered for this reason. Professionals move them quick. Now, your little neighborhood thief might get caught, but not the crime rings.
Best solution is to install a kill switch. A lot (or very few) of ppl put a switch on the fuel pump wire, no gas no go...
In no way is this post meant to discuss, rather just to keep people aware that there a vulnerabilities with their vehicles and to take care. There is nothing to discuss. FOB can be faked/spoofed and your vehicle can be stolen just like that. For the thief with the tech it is childs play.