How to find and turn off the hidden candid camera?

Hello everyone, due to my work, I often travel to the hotel for business, but the news often reports that the hotel has many sneak cameras, they will spy on my privacy, is there any way to find and close them?

Topsignaljammer  2022.

Hello, the signal blocker cannot prevent candid photography, because if the candid photography device is recording and there is no signal transmission, there is no way to shield and interfere. Now there are devices that can detect whether there are sneak cameras in the room, and there are also companies that can provide door-to-door inspection services. Professional equipment can be used to find sneak camera devices hidden in the room.