When you stay in a hotel, how do you know
there is no room pinhole camera ?
When travel or take a business trip, you will stay at a hotel, but you do not know that you could unknowingly be photographed.
Remember when staying in a hotel, you can use this method to check your room :
When you have entered into your room, turn off the lights, and close the curtains,open your phone camera, do not turn the flash light on.
Turn around the room with your cell phone,
when a red dot is found, that means that a
hidden web camera is installed.
If no red dots, the room is ok.