High-end hidden camera detectors scan the area for specific frequencies that cameras usually operate on. By scanning frequency bands 1.2 GHz – 2.4 GHz – 5.8 GHz, a hidden camera detector can alert you if a device is operating nearby at up to 300 feet. Then, it will let you know if the device is operating with a PAL / SECAM or NTSC signal.

　　It is possible for other devices wifi jammers in the area to be operating on the same frequencies. That’s why it’s important to investigate each source of the signal. More advanced devices can help you distinguish cameras from other devices easily.

　　The best hidden camera detector can not only find a hidden camera but can also display the video feed and play the audio that is being sent through that hidden camera. With an LCD screen, you can view and listen to exactly what the hidden camera is sending to the operator.

　　With a tool like that, it will be easier than ever to find exactly where the hidden camera is and what it has been able to record. Similar devices can also detect and jammer gps signals and cell phones.

　　There are some other options on the market for camera detection that are much less advanced. There are handheld devices that rely on shooting an infrared beam of light that reflects off of lenses.

　　This light isn’t visible to the naked eye but reacts well to hidden lenses. You’ll have to then rely on your ability to move around the room and detect when a flash of light indicates a camera.