http://kittens.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/issues/physical-trackers
At EFF, we have been sounding the alarm about this threat to people, especially survivors of domestic abuse. These physical trackers encompass a spectrum of technologies, including Bluetooth and GPS, harnessed by a variety of well-known manufacturers.