Jammer! He Just Wanted Privacy, But This Little Device Caused Big Trouble - YT
https://www.youtube.com/watch?v=bn3MZp1qKmw
Gary Bojczak drove a truck for a construction company that was constantly tracking his vehicle. Plugging a little dongle into the cigarette lighter could block that surveillance, but ended up causing way more problems than it solved.
https://stacker.news/items/1245613