Do you ever feel you are being followed? These are 4 common devices located by JRS INVESTIGATIONS during a TSCM DEBUGGING SWEEP in BOULDER, CO:   1. Magnetic battery-powered GPS trackers * Small black boxes with strong magnets. * Often attached underneath vehicles, inside wheel wells, or under bumpers. 2. OBD-II plug-in trackers * Plug directly into a car’s OBD-II … Continue reading 4 Common Devices Found in TSCM Bug Sweeps Boulder Colorado