A customer dropped his 2012 F150 off for service today and I noticed a little "add-on" placed strategically on the roof above the passenger side windshield. Our service adviser told me this customer had been quizzing him 6 months prior about the best way to disconnect the GPS tracking system that Ford installs on every new vehicle. (news to me??) Anyway the customer is totally convinced that Ford tracks his every move and sells this info to marketing agencies so they can "tailor" his TV commercials solely to him and that he sees different commercials on a given program than say, somebody that drives to the ice rink or comic book store weekly. After being told the disconnection of said device was impossible he manufactured this pseudo 'tin-foil hat' out of some lead and adhered it to the roof with two sided tape.
I didn't get a chance to find out what specific alloy he used or whether he prefers a higher tin content for better mold fill out. Perhaps there's a market for these around area 51?