Worried about hidden cameras in hotel rooms? Learn 6 smart and simple ways to detect hidden surveillance devices and protect your privacy.
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| Protect your privacy while traveling. Here are 6 proven ways to detect hidden cameras in hotel rooms and stay secure. Image: Symbolic image |
IT Desk — June 8, 2025:
Hidden cameras in hotel rooms, spas, and trial rooms have become a growing concern. Unscrupulous individuals exploit technology to invade privacy — but with a few smart steps, you can protect yourself. Here are six practical ways to detect hidden cameras during your stay:
1. Listen for Unusual Noises During Calls
Hidden wireless cameras emit radio frequencies that can interfere with mobile phone signals. If you hear buzzing, static, or crackling noises while speaking on your phone, especially when walking around the room, it could indicate a nearby transmission source.
Move slowly and talk while scanning different areas of the room. If the interference intensifies in one spot, investigate that area closely. Look behind furniture, smoke detectors, air vents, or wall clocks. These are common hiding places for covert devices.
You can also switch your phone to airplane mode and use it as a makeshift RF detector by observing sound fluctuations when it’s close to suspect areas. While not 100% accurate, it can provide valuable clues in conjunction with other methods.
2. Do the Mirror Finger Test
Two-way mirrors are often used in hidden camera setups because they allow someone to view or record from the other side without being seen. To test, place your fingertip against the mirror. In a normal mirror, you’ll see a small gap. If there’s no gap, it could be two-way.
Two-way mirrors are often mounted in walls, closets, or even as part of a larger decorative design. Try shining a flashlight at an angle; if light passes through or reflects oddly, you may be looking at more than just a mirror.
Also, gently tap the mirror. If it sounds hollow or you suspect there’s a void behind it, request a room change or notify hotel staff. Always trust your instincts — if something feels off, it probably is.
3. Use Your Phone’s Flashlight in Darkness
Many hidden cameras have tiny lenses that reflect light, especially in darkness. Turn off all the room lights and shine your phone’s flashlight across objects like alarm clocks, power outlets, smoke detectors, or decorative items. Watch for reflections that resemble tiny camera lenses.
You can also scan from multiple angles. Sometimes a lens will only catch light from a certain direction. Blue, purple, or green glimmers can indicate optical components.
This trick is particularly useful in bathrooms, bedrooms, or dressing areas. Always scan items that are pointed directly at beds or private spaces — these are often chosen as camera angles by those with bad intentions.
4. Scan the Wi-Fi Network
Many hidden cameras rely on Wi-Fi to stream or store footage. You can use free apps like Fing or Network Scanner to detect devices connected to the hotel’s network. Look for unfamiliar device names such as "IP Camera," "NestCam," or brand names like "D-Link" or "Wyze."
Note the MAC address and manufacturer if available. If something seems suspicious, disconnect your device and reconnect to verify if the unknown device persists. Turning off your Wi-Fi momentarily and seeing if any unknown devices disappear can also help narrow down hidden electronics.
Hotels often have many connected devices, but if you notice gadgets that don’t belong — especially near your room — it’s worth reporting to hotel management. These apps can’t always detect cameras that use separate networks or SIM cards, so use this technique with others.
5. Use Hidden Camera Detection Apps
There are many apps designed specifically to help users detect hidden cameras by scanning for magnetic fields or infrared light. Apps like Hidden Camera Detector (iPhone) and Glint Finder (Android) use your phone’s built-in sensors to pick up electromagnetic signals from electronics.
Move the phone slowly around the room, especially around suspicious or private areas. If the app alerts you to strong readings in a particular spot, that could be the location of a concealed device. Be cautious around metal furniture or wiring, which may trigger false positives.
For best results, combine app detection with manual inspection. Check where the signal strength spikes and inspect closely for tiny pinhole lenses, oddly placed items, or cables that lead to nowhere.
6. Search for Infrared Light
Most night-vision surveillance cameras use infrared (IR) lights to see in the dark. While invisible to the human eye, these lights can appear as faint red, pink, or white dots when viewed through your smartphone’s camera in complete darkness.
To check, turn off all lights in the room, close the curtains, and switch your phone’s camera to video mode. Slowly scan across the room. Pay special attention to smoke detectors, ceiling fans, curtain rods, or charging stations — common hiding places for cameras.
If you see any glowing lights that aren't visible to the naked eye, move closer to inspect further. IR LEDs are usually arranged in a circular pattern around the lens. If you find such a glow, take immediate action by contacting hotel staff or local authorities.
While it’s unsettling that hidden cameras can be found in places meant for comfort and safety, a few minutes of precaution can make all the difference. Use a combination of visual inspection, mobile tools, and instinct to ensure your privacy isn't being violated.
If you discover or strongly suspect surveillance in your room, notify hotel management immediately and consider filing a police report. Your safety and privacy come first — don’t hesitate to act.