Found Moving With You: Cheap Trackers, Hidden Cameras and How to Find Them

By NorwegianSpark Editorial · Published August 9, 2026 — written with AI assistance and reviewed by the NorwegianSpark SA editorial team.

Two devices in this category are genuinely worth your attention, and unlike the rest of the cheap-hardware series they are not aimed at your data. They are aimed at you: a tracker that reports where you are, and a camera that records where you are. Both are cheap, both are sold openly for legitimate reasons, and both are misused often enough that the platforms have had to respond.

The good news is that this is the one area where the defence improved dramatically and recently, and where it now runs by default on a phone you already own.

The tracker problem, and the fix that shipped

Bluetooth trackers work by being found. The tag itself has no GPS and no connection of its own; it broadcasts a signal, and any nearby phone in the manufacturer's network relays a location back to the owner. That crowd-sourced design is what makes a coin-sized tag able to find keys anywhere in a city — and it is exactly what makes one slipped into a bag able to follow a person.

Because the problem was structural, the fix had to be too, and it required competitors to cooperate. Apple and Google jointly developed an industry specification, Detecting Unwanted Location Trackers, and shipped support on both platforms in May 2024 — Apple in iOS 17.5, Google on Android 6.0 and later. Both continue to work on it through the IETF.

What it does: if an unknown tracker is detected moving with you over time, your phone tells you, regardless of which platform the tracker is paired to. That cross-platform part is the whole point — before it, an Android user could be followed by an iPhone-ecosystem tag with no warning at all.

• On Android the alert reads "Tracker traveling with you".
• On iPhone it reads "[Item] Found Moving With You".
• From the alert you can make the tracker play a sound to locate it physically, view its identifier, and get instructions for disabling it.

Two things to check on your own phone, because the protection is worthless if it is switched off: Bluetooth must be on, and location/notification permissions for the relevant system service must not have been denied. On Android the setting lives under Safety and emergency; on iPhone, under Privacy and Security. Both platforms also offer a manual scan, which is the right tool if you have a specific suspicion rather than waiting for the passive alert.

If the alert fires and you find nothing. This happens, and it is usually innocent. The alert triggers on an unknown tracker that has stayed with you, and "unknown" means "not paired to your account" — not "hostile". A tag in a partner's coat, a colleague's rucksack on a shared commute, a tag left in a hire car or a borrowed bag will all set it off. Play the sound first; if it comes from something with an obvious owner, that is the end of it. Take it seriously when the alert repeats across separate journeys on different days with no shared companion to explain it, because persistence over time is the signal the passive detection cannot evaluate for you.

What it misses. The specification covers participating Bluetooth trackers. It does not cover a dedicated GPS tracker with its own SIM — the kind sold for fleet and vehicle use, which reports directly over the mobile network and broadcasts nothing for your phone to notice. Those are typically larger, need charging or wiring, and in a private car are most often found physically: wheel arches, under bumpers, inside the boot lining, plugged into the diagnostic port under the dashboard. If a vehicle is the concern and the passive alerts are silent, a physical search is the method.

Hidden cameras

Camera modules are now small enough and cheap enough to disappear into a smoke detector, a plug adapter, a clock or an air purifier, and they are sold for a mix of legitimate and obviously illegitimate purposes. The realistic exposure for most people is short-term rentals, changing rooms and shared accommodation.

Detection is less magical than the apps suggest, but a systematic sweep is genuinely effective, because the physics constrains where a camera can be.

• Think about sightlines first. A camera has to see something worth seeing. Walk the room and ask what is aimed at the bed, the shower, the changing area. Anything positioned oddly for its supposed function is the thing to look at.
• Look for the lens. In a dark room, a bright torch held near your eye and swept slowly across surfaces will make a lens retro-reflect as a small bright point. This is the most reliable low-tech method there is.
• Follow the power. Continuous recording needs continuous power. Devices plugged in where nothing needs to be plugged in, or with a cable running somewhere odd, deserve a second look.
• Check the network, carefully. A device streaming over the property's Wi-Fi is visible to anyone who can list connected devices, but on a network you do not control this is limited, and an SD-card recorder is invisible to any network scan. Treat a clean network scan as weak evidence, not as an all-clear.
• Be sceptical of detector apps. Phone magnetometers find metal, not cameras, and infrared detection depends on the camera using illuminators and on your phone's filter. They are not useless, and they are nowhere near conclusive.

If you find one, the correct order is: do not touch or dismantle it, photograph it in place, leave the room, and contact the police and the platform. It is evidence, and handling it damages the case.

Cars, and the awkward one

The hardest version of this is not a stranger. Tracking within relationships is common and the alerts above are built with that in mind, which is why they let you find the device physically rather than only telling you it exists. If that is the situation, the technical step is the smaller half of it, and a domestic abuse support service is better placed than any article to advise on sequencing — because removing a tracker is itself an event the other person will notice.

Where this fits

This is the last piece in the cheap-hardware series, alongside the USB stick that types, evil twin Wi-Fi and card cloning; the overview is at cheap hacking gadgets explained.

Two neighbours are worth reading if this is your concern. Who else can see your security camera is the inverse problem — the cameras you installed yourself, and who else has reached them. And travel device security covers what to do with your own hardware in places you do not control.