Spy camera detector
Spy camera detector for hotels and rentals.
Most spy cameras are ordinary objects with a lens added — a charger, a clock, a smoke detector. CamFinder looks for the lens, not the disguise.
- No upload
- Runs on your device
- No account
The disguise changes. The lens doesn't.
Search for spy cameras and you'll find the same list of hiding places repeated forever: the alarm clock, the phone charger, the smoke detector, the stuffed bear. The list keeps growing because the disguise is the cheap part. The optics are not. Every one of those devices still needs a lens with a clear view of you, and a lens behaves the same way whatever it is glued inside. That is the thing worth scanning for.
Signals
What a scan looks for
Three signals, all of them visible to a phone camera you already own.
Optical
Lens retroreflection
A camera lens sends light straight back where it came from. Sweep a bright light across a shelf and a hidden lens answers with a small, fixed glint that follows you.
Infrared
Emitter bloom
Night-vision cameras light the room with infrared your eyes can't see. Your phone's sensor can. It reads as a pale violet glow ringing the lens.
Placement
Sightlines
A camera has to see something to be worth hiding. The scan weights objects with a clear view of the bed, the shower door, and where you undress.
Sequence
How the scan runs
Four passes, in order. The last one is the scan's own work, not yours.
- 01
Allow the camera
The scan runs in the browser. Your phone asks once, and you can revoke it just as fast.
- 02
Sweep the room slowly
Hold the phone at chest height and pan one wall at a time. Slow beats thorough — a fast sweep skips glints entirely.
- 03
Check what it flags
Flagged points hold on screen with how long they have stayed put. Most of them will be screws, smoke sensors, or ordinary reflections.
- 04
Let it rule things out
As you move, the scan compares every flagged point against the room's own motion. A lens stays stuck to its object; a reflection slides off and gets marked as ruled out.
Streaming or storing, the lens is still there
Half the advice online tells you to look for a device on the Wi-Fi network. That only finds the cameras that are connected, and the cheap ones sold as spy devices very often are not — they write to a memory card and someone collects it later. Nothing about that is detectable over the air. The lens, however, has not moved: it is still in the room, still pointed at you, and still reflecting light back at a torch.
Field guide
Where cameras usually are
Hidden cameras are placed for sightlines, not for cleverness. Start with anything that faces a bed, a door, or a shower.
Hotel room
- Smoke detectors mounted above the bed
- Alarm clocks turned toward the pillow
- TV bezels and set-top boxes
- Air vents on the bathroom wall
Short-term rental
- Shelf décor with a clean line to the bed
- USB chargers and power strips
- Routers placed unusually high
- Picture frames and wall art
Changing room
- Gaps in mirror seams and trim
- Coat hooks and hanger rails
- Ceiling tiles directly overhead
- Ventilation grilles at eye level
Privacy
Nothing leaves your phone.
The scan runs entirely in your browser. Frames from your camera are read, measured, and discarded in the same moment. They are never uploaded, never stored, and never sent anywhere. There is no account, so there is nothing for anyone to request from us.
- No frames uploaded
- No account, ever
- Nothing is stored
Questions