It’s a modern concern that’s no longer just for the paranoid. With affordable, discreet GPS devices readily available online, it’s now entirely possible for your vehicle to be tracked without your knowledge—or consent.
Here’s what you need to know about the risks, detection methods, and how to protect yourself.
How Hidden Trackers Are Planted
Unauthorised trackers come in many forms:
- Magnetised GPS units: Small devices stuck to the underside of your car
- Battery-powered RF trackers: Often hidden under seats or dashboards
- OBD plug-ins: Installed discreetly into your car’s diagnostic port
- Bluetooth tiles: Low-power location beacons that piggyback on smartphones nearby
Some transmit live location data. Others store movement logs to be retrieved later. Many are cheap, compact, and nearly invisible to the untrained eye.
Legal Standing in the UK
While using a tracker on your own car is perfectly legal, covert tracking of someone else’s vehicle without their knowledge usually breaches:
- The Data Protection Act
- The Protection from Harassment Act
- GDPR obligations (for businesses and employers)
If you’re being tracked without consent, it may constitute harassment—and could be a criminal offence.
How to Spot an Unknown Tracker
- Do a thorough physical inspection: Look in wheel arches, behind bumpers, under seats, in the glove box, and around the battery compartment.
- Use an RF scanner or bug detector: These can reveal hidden devices that emit signals.
- Check your car’s OBD port: If something’s plugged in and you didn’t put it there, that’s a red flag.
- Get a professional sweep: Experts can scan for both powered and passive devices using advanced detection tools.
What to Do If You Find One
- Take clear photos before removing the device
- Contact local police if you suspect foul play
- Disable any unfamiliar connected car services or tracking apps
- Consider investing in proper vehicle security going forward
Stay in Control with GuardOn’s Vehicle Protection Lineup
GuardOn offers a full suite of tracking and immobilisation tools built to help you take back control and keep it—whether you’re looking for subtle monitoring, theft recovery, or total security.
| Product | Type | Ideal For | Key Features |
|---|---|---|---|
| EasyTrack | Plug-and-play tracker | Daily drivers, parents, businesses | Fast setup, app access, real-time location |
| Guardian | Hardwired tracker | High-value vehicles, fleet users | Tamper-resistant, hidden install |
| Phantom Guard | No Tag No Start immobiliser + tracker | Luxury and keyless cars, theft-prone areas | Immobilisation + live GPS tracking |
Whether you’re just looking to monitor movement discreetly or need high-end immobilisation and theft response, GuardOn has a solution built to suit your needs.
Use code GUARDON10 for 10% off Phantom Guard
Ready to take full control of your vehicle’s privacy and protection?
Call us on 02080587115 or email info@guardon.io—our experts will match the perfect GuardOn product to your needs.

