What is the reason why the hotel mirror has a red dot but doesn't flash?

It may be a camera, or it may be a power socket indicator reflected in the mirror.

You can point your finger at it. Point to the mirror. Put your finger on the mirror. If there is a distance between your fingertips and the image in the mirror, it is a one-sided mirror. If there is no distance between the fingertip and the image in the mirror, it is a double mirror.

Network transmission can be judged by tapping the mirror and listening to the sound. When you find that the sound is hollow and there is a slight echo, then this mirror may be a double mirror. But it doesn't seem easy to tell the difference.

How to check whether there is a camera in the room;

1. Turn off the light in the room, turn on the camera function of the mobile phone (don't turn on the flash), and use the mobile phone to circle the room. There is no red dot on the screen, which means the room is safe and there is no pinhole camera. Pay attention to the extremely hidden dead angle.

2, the use of professional dog detection tools, can use the principle of electromagnetic induction, at any time to detect the presence of pinhole or eavesdropping equipment, to prevent, focusing on the inspection of objects facing the bed and some flowers and plants.

3. Avoid the entry and exit of unidentified people. Pay attention to whether the doors and windows are closed when taking a bath, and go in and out of public places. Pay attention to check whether there are suspicious people or inappropriate items around.

4. Turn off the power. Because pinhole cameras consume a lot of electricity, photographers may use the power in the room. You can turn off the main power supply in the room, and the pinhole camera will not work normally.