If you think the room you are in isn’t safe for you that there might be people monitoring you with some hidden surveillance camera or you’re in a room that you think it might have a hidden CCTV camera but you’re not sure of it yet, you can try looking for it with your mobile phone by searching for infrared lights. Although infrared rays are invisible to the naked eye, but you already have a device that can help you locate it which is your smartphone.
Well, Some smartphones have filters to block out infrared light on their primary camera, but very few of them have filters on the front camera. To determine which camera will work for you, grab an infrared remote like the one you use for your TV. Point it at your smartphone’s primary camera and press a button. If you see the light on your phone’s screen, then it can detect infrared. If you don’t, try again with the front-facing camera.
Once you determine the best camera to use, turn off the lights in the room you want to sweep. Then turn on your smartphone’s camera and start looking for any glowing lights. IP cameras don’t come in any standard configuration so you might see just one, four, six, or some other combination of lights. They’ll typically be purple but sometimes can look white. You won’t necessarily need to be near the hidden camera. In the above image, the camera is just a few feet away. But take a look at another picture from the other side of the house:
The lights in the center of the image are the same camera, just three rooms away (a dining room, a living room, and a study). That’s bright enough to be noticed and warrant closer investigation. Don’t just look at the center of walls though, point your smartphone at the ceiling, vents, even outlets. When the lights are on, look for anything unusual. Does a room have more than one smoke detector? Is there a USB hub in a place with no other electronics? If you touch a standard mirror and look at your finger from an angle, your reflected finger won’t “contact” your actual finger. If you do the same with one-way glass, your reflected finger and real finger will contact (seem to touch), and that could be hiding a camera. Noticing out-of-place things can help you find hidden cameras.
Unfortunately, there’s no guaranteed method for finding a hidden camera. But taking these extra steps when you arrive will give you fighting chance, and hopefully some peace of mind.