Hiding a camera to record someone in a place they would expect privacy is illegal across the world, and can be deeply unsettling for those that suspect they are being recorded.
The easiest way to detect hidden cameras and listening devices is to use a smartphone. Dedicated hidden camera detectors are useful for uncovering hidden surveillance.
Read on to learn how to check for hidden cameras in just 5 steps, as well as what to do if a spying device is found.
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What Does a Hidden Camera Look Like?
Hidden cameras are significantly smaller in size than regular security cameras, with lenses that can usually be held between thumb and forefinger. Mini cameras available to buy are rarely bigger than one or two inches in diameter.

Thereās a higher chance that the camera will be custom-made rather than bought from retail, because custom-making a device allows it to be easily concealed within an object.
These usually lack proper casing, so the wiring, circuit board, and other components will be visible inside wherever it is installed.
Since it needs to be powered at all times, the most common places a hidden camera is found include power outlets, smoke detectors, and alarms.
Suspicious about a smoke detector? Detect hidden cameras in smoke detectors by:
– Approaching it from the side, where possible, to avoid being seen
– Checking for protrusions or irregularitiesāa hole in the grillwork, wires, flashing bulbs
– Removing the cover to investigate inside the unit without tampering with it
Detecting Hidden Cameras: 5 Steps to Finding Spy Cams
When you have suspicions about hidden cameras, itās easy to quickly get caught up in anxiety and become irrational. After all, it is a frightening prospect.
But by remaining calm and following the 5 steps below, you can instill some āmethod in the madnessā, verifying your suspicions in a sensible way. Hereās what to do.
When searching for hidden cameras, it helps to know what youāre looking for. Discover different types of hidden cameras you need to know.
1. Scan the environment carefully for spy cams
Checking the surroundings carefully is the first and most basic step in spotting hidden cameras. Take time to visually assess the location.
In many cases, hidden cameras may actually be quite juvenile devicesāpoorly assembled, with wires and circuitry visible, or otherwise poorly hidden, so simple visual assessments are useful.
2. Check for keyholes, holes or unusual objects
Next, take notice of any keyholes, small holes or unusual objects which could conceal a camera lens.
Use fingers to check what eyes alone might not be able to verify by feeling for lenses over or inside holes along walls, doors, and objects.
3. Detect hidden cameras with a radio frequency detector
A radio frequency (RF) detector is a tool that can be used to locate and identify hidden cameras by detecting the cameraās radio frequency emissions.
Naturally, this isnāt going to be easily accessible for most people, but is important to mention because it can identify even the most well-hidden cameras.
4. Use a mobile phone camera or infrared detector to find hidden cameras
Suitable for finding infrared (IR) cameras, this is among the most useful methods for finding a hidden camera because you donāt need a dedicated device to carry it out.
Simply point your phoneās camera around the room and look for any bright red dots that appear on the screen. These dots indicate the presence of infrared, which the majority of cameras give off for the purpose of enhancing images in the dark.
5. Use a flashlight to find hidden cameras
Much like using a phone camera to notice infrared lights, a flashlight can be used instead to check for unusual reflections from objects as a final measure.
Simply turn off all the lights in the room and slowly scan the area with the light for any reflective lenses that might indicate a hidden camera.
Feel uneasy in a vehicle? Detect hidden cameras in cars fast by:
– Discreetly looking around the vehicle. Cameras inside ride shares, like Ubers, are unlikely to be hidden, since surveillance in Ubers is encouraged and legal
– Checking the dashboard for dual-lens dash cams, which record both the interior and exterior of the vehicle
– Taking the vehicle to a mechanic if the vehicle you suspect being bugged belongs to you
Where are Hidden Cameras Usually Located?
The good news is that thereās realistically a limited number of places a hidden camera is likely to be. This is because itāll need a source of power to keep it functioning.
Knowing what those common places are can be helpful in uncovering them faster.
These are the most common places hidden cameras are located.
Electronic Devices
Telephones, power outlets, and other electronic devices make logical and convenient places to hide custom-made hidden cameras, because they also require a constant source of power. This allows the hidden camera to be on 24/7.
āSpy camerasā sold at retail often make use of USB ports to allow for constant charging. So electronic devices that are powered through USB cables, like USB memory sticks and phone chargers, are common disguises.
Smoke Detectors and Alarms
Any kind of alarm device, be it smoke, carbon monoxide, or something else, can be used to hide a camera. Again, there is a reliable source of power for the device from the alarmās battery.
The ceiling allows for a birds eye view of an entire room with a wide lens, while the height makes it more physically inaccessible.
Mirrors
Detect hidden cameras in mirrors by shining light on it at various angles, as well as turning off all lights and observing the mirror up close. Two-way mirrors are a piece of glass that reflects the viewerās image on one side and doesnāt on the other, acting as a concealed window.
Obviously, putting a camera lens against the transparent side will make it very difficult to notice at a reasonable distance.
Toilets and Bathrooms
Hidden cameras are installed for any number of reasons; spying, extortion, and information collection come to mind. Voyeurism is also among those reasons, making bathrooms a hotspot for hidden cameras.
Waterproof cameras may be hidden inside toilets, where the edge of the seat is able to conceal the device when looking at it from above, or drilled inside the porcelain.
Any kind of surveillance in bathrooms, public or private, is illegal, so even CCTV that isnāt hidden in a toilet or cubicle must be reported immediately.
What to Do When You Find a Hidden Camera
If you find something that looks like a camera, microphone, or tracking device, take a photo of it. It may be harmless, but if possible, do not touch it or disconnect it so that fingerprints can be preserved.
If the components have brand names or product serial numbers, make a note of it. A quick keyword or image search should reveal what the object is.
Should I call the police if I find a hidden camera?
Should a search confirm the presence of a hidden camera or microphone device, contact the police immediately, as well as the hotel admin or the booking service you used. Police will take fingerprints upon arrival. If itās not possible to leave the area immediately, use a towel or blanket to cover up the device.
If staying in an Airbnb or the home of someone you know, the best thing to do is to exit as soon as possible and contact the police immediately.
Do not put yourself in danger by bringing up your suspicions with the owner. Contact Airbnb afterwards. If the discovery has been made in a public place (e.g. a bathroom), contact the council after reporting to the police
Is There a Free App to Detect Hidden Cameras?
There are numerous free apps to detect hidden cameras and microphones that are available for iOS and Android devices. Take a look at our list of the best hidden camera detector apps to find more about what they are and how they work.
FAQ
Can a cell phone detect a hidden camera?
Yes, a cell phone can detect a hidden camera. Download a hidden camera detector app. Once the app is installed, open it and scan the area for any hidden cameras. The app will then create an alert if any cameras are found.
What is the easiest way to find hidden cameras?
One of the easiest ways to find hidden cameras is to use a cell phone. Simply download a hidden camera detector app and scan the area for any devices. The app will create an alert if any are found. Using a flashlight to check for unusual reflections in objects is another easy way to find a hidden camera; the lens will reflect the light back, drawing attention to the hidden device.
What are signs of hidden cameras?
There are a few signs that there may be hidden cameras in an area. If clutter seems to be covering a power outlet or electronic device, inspect it. Another clear sign is wires running through walls or under furniture with no obvious end point. Shining a light on suspected areas will cause reflections as the light bounces off the lens. No matter how well hidden a device is, the lens still needs to be exposed to observe a space.
How can you tell if a light bulb has a hidden camera?
If you are suspicious that a light bulb may contain a hidden camera, do the following.
- See if the light bulb is turned on. If it is, then it is almost guaranteed to not contain a hidden camera. The heat from the bulb would burn the device and cause a fire.
- Look at the size of the light bulb in comparison to other lighting fixtures in the space. If it is significantly larger, thereās a chance it could contain a device inside it.
- Check for a lens on the light bulb by shining a light on it at various angles in the dark. Light will bounce off the lens.
What are some ways to disable a hidden camera?
Disabling a hidden camera is not advisable, because police will take fingerprints of the device as soon as they are notified of it. Instead, cover it with a towel or blanket. Depending on the situation, destroying the device could be dangerous.
Conclusion
Suspecting the presence of a hidden device is a frightening ordeal. Itās a serious invasion of privacy that mustnāt be ignored. Notify the police immediately, and they should launch a full investigation into the incident.
While detecting a hidden camera means you can cover it up or leave the premises, never attempt to disable, remove, or turn it off yourself. Fingerprints will need to be obtained upon the arrival of the police, so try not to touch, wipe, or interfere with it in any way in the meantime.
How do I find a listening device in my house?
Like cameras, audio devices can be concealed in homes unbeknownst to occupants. Also like hidden cameras, there are apps to find hidden listening devices. Find out more about how to find hidden listening devices in houses and what to be on the lookout for.
Recommended reading:
How are Hidden Cameras Powered?
How to Tell If Security Cameras Have Audio: 5 Easy Methods