How to prevent traveling and staying in hotels, where there are hidden cameras?

When you enter a room, turn off some lights, then turn on the camera function of your mobile phone and walk around the room. If the pinhole camera is equipped with infrared sensing function, then your mobile phone will display red dots. Focus on air conditioners, lampshades, ceilings, cosmetic mirrors, smoke detectors, vases, sockets, TV cabinets, bedside lamps, vases, fragrances, murals, etc. Because the camera equipment may take pictures continuously through wired power supply, it is necessary to check whether there is space.

After check-in, turn off all the lights in the room to create a dark space, then turn on the camera of the mobile phone and circle around the room carefully, especially those places we mentioned above that are likely to hide the camera. Better do more tests. Not during the inspection. If your mobile phone captures the invisible little red dot, there is probably an illegal camera.

Sweep every corner of the room with an infrared flashlight. If there is a camera, the infrared flashlight will have a very obvious red reflection.

Check all the exposed holes in the room with a flashlight. If you have a camera, you can see the reflector through a flashlight.