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The Secrets to Finding Hidden Cameras

by on April 10, 2019
in Health and Home, Cameras and Photography, Home Safety & Security, Tips & How-Tos :: 113 comments

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Now that tech is smaller and cheaper than ever, it's become easy to install cameras almost anywhere. In fact, once you start looking, you may realize that cameras are everywhere: on traffic signals, in parking lots and inside stores. If you're reading this article on your phone while waiting for your morning coffee, there's probably a camera keeping an eye on you right now. You may even have some "hidden" cameras of your own, like Dropcams for home security, nanny cams to watch the baby or a video doorbell to see who's knocking.

These cameras have plenty of perfectly legitimate uses. They can provide security in public spaces and prevent theft in businesses. The problems arise when they're used for nefarious purposes, which happens more often than any of us would like.  Earlier this year, police arrested a man who had secretly recorded women and girls in changing rooms at northern Virginia shopping malls. And, Airbnb has had ongoing problems with renters finding hidden cameras planted by hosts in places where guests should expect privacy. (The Airbnb regulations do allow hosts to place cameras in common areas, but they must disclose their use.)

One of the problems is that these tiny, inconspicuous cameras can be easily bought online. Browsing Amazon for hidden cameras is a little disconcerting. Cameras are disguised as alarm clocks, power adapters, smoke detectors, photo frames and even water bottles, most of them wireless and battery powered. These cameras are easy to obtain, and most require no technical skills to install, meaning anyone with ill intent could place them in a public place and watch you when you're unaware.

Aren't Hidden Cameras Illegal?

Laws pertaining to hidden cameras vary from state to state, so you'll want to check your local laws to find out the specifics in your area. The matter typically comes down to where you can expect to have a "reasonable expectation of privacy." There are certain spaces you would expect to be private, like bathrooms, dressing rooms, hotel rooms and locker rooms, and surveillance cameras placed in such areas are typically illegal. (However, if a sign informs you that you're under surveillance somewhere like outside a dressing area in a store where there are cameras to discourage theft, the cameras are typically considered legal.) In spaces that aren’t private, like browsing a shopping mall or walking down a city street, cameras are typically legal whether they're hidden or not.

Of course, the fact that hidden cameras might be illegal doesn't stop people from placing them, so it's up to you to remain vigilant.

How Can You Be Sure You're Not Being Recorded?

Cameras are small and often disguised, so the first thing to do is to take a look around. Not everyone placing a hidden camera does it in the smartest way, and you may be able to find them with a careful examination of the room. Look for the following tell-tale signs.

  • Wires in unexpected places or wires that don't seem to go anywhere While many cameras are wireless, unexplained wiring could lead to a hidden camera.
  • Lights A camera designed to be stealthy won't have any obvious signs like this, but cameras not designed to be hidden often do, and if the person who placed the camera wasn't careful, this can be an obvious giveaway.
  • Small holes in walls or other places It only takes a pinhole for a camera lens to see into a room. Some types of hidden cameras take advantage of this by hiding in innocuous objects with a small hole for the camera.
  • Objects out of the ordinary If you're in a familiar place, look for anything that's new or has been moved.

Another low-tech method of finding hidden cameras is to listen. While this won't catch every camera, some motion-sensitive cameras make a soft click or buzz as they turn on when someone walks by. In a noisy environment, you definitely won't be able to hear them, but if you're in a place where you can turn off lights, radios, televisions and other sources of sound, you may be able to hear a camera activate. You can also try turning out the lights and scanning the room with a flashlight to look for lens reflections. 

If the hidden camera is living streaming video, you may be able to see it on the local Wi-Fi network. Software, like Nmap for computers, or apps like Fing for iOS and Android devices will scan whatever Wi-Fi network your computer, smartphone or tablet is connect to and list the devices.

Unfortunately, the above methods aren’t foolproof — but don’t give up just yet. While not all hidden cameras produce obvious visible (or audible) signs of their presence, every camera has a lens that reflects light whether it's on or off. You should be able to spot a camera by doing a thorough scan of the room with a light source, looking for a glint of light as it reflects off the camera sensor. This method still isn't perfect, as you'll need to shine the light from the right angle and, with some devices, be fairly close to the camera to spot it.

The most straightforward way to find a hidden lens using a light source is to turn off the lights and pan a flashlight around the room. Go slowly, and examine suspicious places from multiple angles. If you see glints of light where there shouldn't be — areas where there are no mirrors, glass or other reflective surfaces — you may have found a camera. Mirrors can be suspicious, too, because you won't be able to see a camera hidden behind them.

Make your search easier by using a camera-detecting app on your smartphone. These apps use your smartphone's flash to light up camera lenses and help you detect them, though many have received negative reviews, which speaks to how tough it can be to spot a hidden camera. For iPhone, there's Hidden Camera Detector ($4.99); for Android, try Glint Finder (free, with advertisements). Hidden Camera Detector is a bit more helpful, as it automatically pinpoints suspected cameras on your phone's screen. Glint Finder, on the other hand, flashes your smartphone's light rapidly to make it easier to pick up a reflection, but it's on you to find the source. With either app, you'll need to be within a few feet of a camera to spot it.

The advantage of these apps is cost and accessibility. While you can purchase professional-grade camera detectors (more on those in a minute), they come with a notable price tag, while these apps are very affordable. And if you need to hunt for a camera unexpectedly, you're likely to already have your smartphone with you. If nothing else, these apps make a good stop-gap method for finding hidden cameras until you get a better solution.
 

Wired and Wireless Camera Detector

Get a Hidden Camera Detector

A professional-quality hidden camera detector is both easier to use and more effective. You can get one for under $100. Professional detectors offer two methods of finding a camera: either they look for that glint from the lens (much like using a flashlight or smartphone), or they detect RF broadcasts from a wireless camera. Some detectors rely on one technology or the other (the cheapest detectors pick up RF), while pricier models include both, a combination of features that are effective at finding different kinds of cameras.

To make visually finding a hidden camera easier, detectors use multiple flashing LED lights — or in more expensive models, lasers — to help light up camera lenses. They're as simple to use as a flashlight. Simply hold them up to your eye (make sure the lights are facing away from your eye) and activate them while looking around the room. Just like a flashlight or smartphone, you'll have to hit the camera from the right angle to tell it's there, so you'll want to take a slow, careful look around the room, focusing on specific areas where a camera might be hidden. A camera lens should light up in the detector's viewfinder, making it easy to spot.

Detecting cameras via RF can be even easier. Most detectors will beep when they find a signal, giving an audible indication when you get near a potential camera. The snag with RF detectors is that there are lots of gadgets that can transmit RF, which means these detectors will either send you straight to a camera or on a wild goose chase for a lot of things that aren't cameras. On top of that, if the camera is turned off or simply not transmitting, there won't be anything for the RF detector to pick up. In the end, even though it takes more time, using a detector that looks for camera lenses can be more effective.

If you're looking to upgrade from an app to a stand-alone detector, try the Wired & Wireless Camera Detector ($59). When turned on, the detector can be set up to vibrate or beep to tell you you're near something that's transmitting, letting you know you could be near a hidden camera even when it's tucked in your pocket. For finding the hidden camera, hold the viewfinder to your eye and look around the room until it spots something. 

If you're looking for professional grade equipment, try the Stealth Camera Lens Finder ($445). At just over four inches long, it's small enough to easily fit into a purse, and it uses simple, one-button activation. It doesn't detect RF, but that helps keep it simple to use. It can uncover hidden cameras even if they're turned off.

What Should I Do if I Find a Hidden Camera?

Even though you can find cameras on your own with a detector, it's best to contact the authorities if you do find one. Your local police will not only be able to remove the camera but also find whoever put it there — and keep them from spying on you or anyone else.

[Images: hidden camera concept via Shutterstock, Brickhouse Security]

The article was originally published  in 9/2011, and last updated on 4/10/2019



Discussion loading

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nice information about hidden camera

From mahesh goug on November 16, 2018 :: 12:07 am

nice information about hidden camera detector . thanks for sharing

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People should be diligent when looking for cameras

From Aaron Norman on January 06, 2019 :: 12:44 pm

I plan on placing several cameras in a place I will be sharing with my sister in law. I hope to catch a lot of good footage of her in various states of undress.
You never know who might be a creep like me. Better look good for those cameras or I will indeed be watching footage of you later.

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Hidden camera

From Tony Smalls on February 08, 2019 :: 3:01 pm

I have a problem this might sound crazy but I have an old lady who live upstairs above me who only follows me around my apartment I don’t understand how she do it but she don’t follow my wife or son it’s like she know it’s me going in bedroom or bathroom kitchen she been living in building since it’s been up I think someone set up a camera for her because she live alone it’s really creepy when I move she move I been living here 3 years now ready to move out can’t take this no more please advise .

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Found cameras ?

From John doe on March 05, 2019 :: 1:38 pm

Ok so i got a bunch of apps all in the same spots it shows cameras even in my fridge there is a hole in it we covered with a sticker a few months ago as a joke n0w I look at it, it beeps saying camera what do I do how to I get it out of these holes hypothetically speaking there is a camera it there an actual device I can buy to find something??

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I hope you will help me

From Jeanne Meier on April 14, 2019 :: 10:56 am

I know this is an older post, but I hope it’s still monitored.

I’ve been stalked for six years. I moved about a year ago, and he followed me. Every effort I’ve made to hide a camera outside has been fruitless. My stalker avoids the area where the camera is, and approaches my house from the other side. I’m now convinced that he has a trail cam or something watching me. But, my yard is heavily wooded. I’ve looked at the trees, and even tried searching with a monocular night vision, all to no avail.

The detective working the case keeps telling me that I have to get him on camera to prove who it is, and that he’s stalking. If I can’t do this soon I am going to have to move again, this time I am going to move out of state. I dont want to do that.

Do you have any advice on how i can find a trail cam in a heavily wooded area?

Thank you for your time!

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The cameras are not just inside your home

From ATTENTION PLEASE on June 13, 2019 :: 1:11 pm

It can be outside as well. Go to your local surveillance camera store and ask the shop assistant if they can tell you how far any of their cameras can film. After you figure out how far these cameras can film, it’s the matter of the quality of the cameras are.


DO NOT TRUST YOUR SHADY NEIGHBOR, people! And do not trust computer geeks, unless proven otherwise. It’s computer geeks who are most into these things.

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Thank you

From Jeanne Meier on June 13, 2019 :: 2:58 pm

My problem is I have a stalker lurking around my house at night, every night.  I keep putting cameras up, (I have went from the standard obvious security cam to trail cams). The best that I have gotten are flash lights or night vision panning my house. I know there is night vision, because I was in my yard once, camera recording me, and when I reviewed the footage later there were lights shining on me that I did not see while I was out there.

Here’s my trouble, every time I put a camera up outside he avoids it. I have had as many as six at a time outside, but he approaches from a different side. I can’t find a camera that has a wide enough motion detection sweep and good enough quality to catch him, but you’d think I would have gotten him by now. This makes me think that maybe he has cameras on me, and he knows when/where I place the cameras. I just don’t know how to find them. The other possibility is that he is finding my cameras when he arrives here before it’s dark. I just don’t know. The police tell me that they cannot convict someone on me and a neighbor saying they’ve seen him, and they can’t convict a flashlight. I am nearing a point of trying to get an attorney on this, because there’s enough evidence to show that something is going on - someone is out here, and the police don’t want to be bothered.

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hidden cameras

From michelle on June 26, 2019 :: 12:28 am

I bought a hidden camera detector and it went crazy in the area I thought I was being watched….however when I told local sheriffs dept they refused to investigate….to this day I have to tolerate this bullshit

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Can't hide from static interference

From Dave on July 26, 2019 :: 6:37 am

You know for all you worried about cameras in your own space best thing ever is a Tesla coil or Jacob’s ladder. Static discharge interferes with the CCD or CMOS camera sensor. There small size also means little shielding from RF interference. An added bonus the noise that comes off of coil is so loud to microphones it’s almost impossible to record voice as well. And if all else fails the Wi-Fi signal will be corrupted and in most cases in a few days somebody will have to come and get the camera to recover the storage for any of the video to be viable. So put up your own counter camera.

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What should be done ?

From Deepika parmar on September 09, 2019 :: 12:03 pm

In case I already detected the camera through the app n i found it’s there where I suspected it to be. My question is when I was checking it the person who placed it already got informed about it.  So if he has deactivated it or made it inaccessible from his phone so will be ever be able to track it ?
If I do register complaint against him will it be beneficial for me as might be he disabled its can it be tracked if it’s not even accessible. Please tell me the ans to this it will be very helpful from u as I know that a friend of me has placed it and I already found it

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WIll be difficult to track

From Josh Kirschner on September 11, 2019 :: 12:31 pm

The only obvious way I can see to track who placed it is for the police to try to track it by the device’s serial number back to the original seller and purchaser. That’s a lot of work, and may not even be possible, so may be unlikely the police will make the effort to do that. However, only certain people would have access to be able to place the camera, so that would seem to be the more obvious investigative route.

Most devices that are Wi-Fi enabled transmit to a remote site where the person can login to monitor. The police could ask that site for information about the historical account access but, again, that may not be possible/practical because the site may be located in another country.

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