Check the room for a hidden camera.
Snoop walks you through five quick checks of a hotel room, rental or changing room: the Wi-Fi network, infrared LEDs, lens reflections, magnets and Bluetooth. Each scan gives its own verdict.
Five checks, one checklist
Do them in order. Each one catches things the others miss.
Network scan
Sweeps the room Wi-Fi for IP cameras: open video ports (RTSP, Dahua, XMEye, ONVIF, RTMP), camera-like names, web pages, mDNS, UPnP and an ONVIF discovery probe. Devices are rated Likely, Possible or Unlikely, with the reasons.
IR finder
Lights off, camera on. Night-vision LEDs glow white or purple on many phone cameras, and Snoop rings the small dots that stay put.
Lens glint finder
Torch on, red view. A camera lens bounces the light back as a tiny sharp point, which Snoop rings as you sweep.
Magnet sweep
A live magnetometer meter with tone and vibration, to find electronics behind mirrors, smoke detectors, clocks and chargers.
Bluetooth scan
Lists nearby Bluetooth LE devices and flags unnamed and camera-like ones.
Where to look
A guide to the usual hiding places, plus the two-way mirror fingertip test.
How to use it
About ten minutes for a room.
- Join the room Wi-Fi and run the network scan first. Cameras that stream over Wi-Fi sit on the same network as you.
- Turn the lights off and pan the IR finder around the room, toward the bed, the bathroom, sockets and clocks.
- Dim the lights and sweep the glint finder across walls and objects. A real lens keeps flashing back as you move.
- Sweep the magnet meter over mirrors, detectors and chargers, then run the Bluetooth scan.
- Look in person at anything Snoop flagged, using the where-to-look guide.
What it cannot do
Snoop helps you look. It cannot guarantee a room is clear.
Cannot see
Cameras that record only to a card, use their own mobile data, sit on another network, or are switched off. Some phones filter infrared out, and not every lens reflects well.
Can mislead
Smart TVs, speakers and plugs can look like cameras on the network. Magnets, speakers and steel all show up on the magnet sweep. Treat every flag as a reason to look, not proof.
Permissions and privacy
Camera frames are checked on your phone and never saved or sent.
| Camera | Live view for the IR and glint finders, and the torch. |
|---|---|
| Nearby devices | Bluetooth scan for the Bluetooth check. On Android 11 and older this needs Location, which Snoop does not use for anything else. |
| Wi-Fi and network | To scan the local network and find your address on it. Snoop only talks to devices on your own subnet. |
| Vibrate | Feedback in the magnet sweep. You can switch it off. |
| Internet | Only for the update check in Settings. |