There is a red dot on the hotel TV screen. Is it a pinhole camera?

It may be the switching power supply of the TV set.

Check whether there is a pinhole camera in the room, as shown below:

1. Close the door and lights of the room, draw the curtains, and leave the room in a dark state without any light. The darker the grid, the better! Turn on the camera function of the mobile phone, walk around the room, remember not to flash, and check the dead corner of the room, ceiling, TV, air conditioner and other places where pinhole cameras may be installed.

If there is a pinhole camera, you will see a red dot on your mobile phone. The red dot is a camera. This method is only effective for pinhole cameras with infrared function.

2. Buy an eavesdropping detector to test in the room. If a detector is installed, it can be detected. Cheaper intelligence can detect wireless pinhole camera devices. If it is wired, it is necessary to use high-end testing equipment.

3. Use the wifi function of the mobile phone to test whether there is a pinhole camera. Turn on the phone's WIFI function and search for nearby hotspots. If the name of a hot spot with the strongest signal is a0.c0.a 1 and so on, take your mobile phone and walk out of the room for about 20 meters to see if the signal will weaken. If it is weakened, pay attention to the possibility of wireless pinhole camera.

4, turn off the power supply, avoid pinhole camera candid. Pinhole cameras usually take a long time to shoot, so they will not be powered by batteries. Power supply is very important for the camera. Pinhole cameras usually need to pull a power cord or be installed in electrical appliances, so turning off the power supply limits this practice.

5. Pinhole cameras are small in size, so the installation is relatively secret, and they are not easy to be found, especially lamp holders, power boards, smoke detectors, fire sprinklers, books (hollowed out) on bookshelves, folders, televisions, behind the speaker net of stereos, the lower edge of tables and chairs, electrical appliances hanging on the walls (such as clocks, air conditioners, ventilators), alarm clocks on nightstands, decorations and so on.

In order to avoid sneak shots, we can choose to turn off the main power supply of the room before going to bed, so it is difficult for the pinhole camera to continue working without electricity.