Hidden Cameras in Bathrooms and Changing Rooms
Small rooms, brief visits, and the highest stakes of any space you will check. Two focused minutes covers almost all of it.
Why these spaces are different
Everything about a bathroom or a changing room inverts the usual advice. The spaces are small, so a camera does not need a wide view or a good vantage point — anything above waist height facing inward will do. They are humid and warm, which limits where electronics survive and concentrates them in the drier fittings. They are used briefly, so nobody lingers long enough to notice an object that does not belong. And in a retail changing room or a gym, dozens of people cycle through daily, which means a device can be placed by anybody rather than only by whoever controls the property.
The other difference is the stakes. This is the category where devices cause the most harm and where the legal position is clearest: recording someone undressed without consent is a criminal offence essentially everywhere. That justifies spending two focused minutes even when you feel slightly ridiculous doing it.
The two-minute check
Stand where you will undress and look outward, at everything above knee height that has line of sight to that spot. Then work through these, in this order:
- Anything plugged in. In a small wet room, mains power is scarce and therefore informative. A plug adapter, air freshener, charger or shaver socket attachment is the most likely housing in the room simply because it is the only thing with permanent power.
- The extractor vent or fan grille. A dark recess, a legitimate reason to exist, an unobstructed view and cable access behind it. Shine a light through the louvres and look for anything solid or reflective among the ductwork.
- The shelf above the sink and any toiletries you did not bring. A shampoo bottle, a soap dispenser, a tissue box or a shaving-foam can that was already there. Battery camera products in exactly these shapes are sold openly. Pick each one up — weight and balance give them away immediately.
- Hooks, towel rails, shower fittings and the shower head itself. Anything fixed at chest height or above, pointing inward. A hook with a dark dot in it is not a hook.
- The mirror. Fingertip test, then a torch test in the dark. Full detail in the two-way mirror guide. Check the frame and mounting points as carefully as the glass — a camera beside a mirror is far more common than glass you can see through.
- Ceiling fittings. Smoke detectors, downlights, speaker grilles and any panel directly above the shower or changing area.
Which scan to use here
The lens scan is the primary tool in these rooms, and it works better here than almost anywhere else. Bathrooms have hard, evenly reflective surfaces and confined dimensions, so you can scan every square metre from close range in under a minute. Turn the main light off and leave a small light on, hold the phone at chest height, and sweep slowly. Re-check every hit from a second angle — tiles, chrome fittings and taps produce a lot of ordinary reflections, and the persistence test is what separates them from a lens.
The infrared check is worth thirty seconds if you can make the room genuinely dark, which in a windowless bathroom is easy. The magnetic detector is useful on the specific objects you picked up and were unsure about. The Wi-Fi scanner is largely irrelevant in a public changing room, where you are not on the same network as anything, but genuinely useful in a rental bathroom.
Changing rooms and gyms specifically
You are usually there for minutes and cannot conduct a search. Prioritise ruthlessly: scan the hooks and the top edges of the cubicle walls and door, look up at the ceiling void above the cubicle, and check any object left behind on the bench or shelf. Devices in these settings are most often placed at the top of a partition looking down, or in an item left casually on a surface, because those are the only placements available to someone who also has to leave within minutes.
If something feels wrong, use the cubicle next to it. That costs you nothing and is a reasonable response to a reasonable instinct.
If you find something
Do not touch it, do not remove it and do not take it with you — you will destroy fingerprint and installation evidence, and in some jurisdictions handling it complicates the case. Photograph it in place with a wide shot showing the room. Get dressed, leave, and call the police before you tell staff or a host. Then report it to the property or platform separately and ask for the incident reference in writing.
If it is a shared facility — a gym, a pool, a shop — other people are still using it, so make the call promptly rather than deciding later.