How can you tell if dome camera is real or fake?
My school has numerous cameras. I know that some of them are fake. But I cannot tell which are and which aren’t.
So what are some design or wire differences that can help you tell the difference between a real and dummy dome camera.
If the fakes are well designed, you will not be able to tell. THAT is the WHOLE point. If you know you might be on camera, and if you do something that you should not that it might end up on a video tape, it tends to make you behave. About the best you can do is “blind” the camera with an infrared laser. That is what they do in movie theaters to stop people from making a video of the screen. The theaters use an unfocused laser behind the middle of the screen to illuminate the entire theater so the video cameras see this bright spot in the middle of the picture, but you see nothing since the laser is just below the visible light frequencies. Even though video cameras have an infrared filter that is supposed to take out infrared, the laser they use is so close to being visible that it passes through the filter. Some people might actually see the dim red spot if the screen ever goes to all black. My local supermarket has a huge number of domed cameras spaced roughly 10 feet apart in every direction. I counted one area and figured there are over 100 hanging from the ceiling. I am fairly certain there are NOT that many real cameras. It would not be practical to record over 100 camera feeds. There IS such a thing as too much information. So the question then becomes, where would it make sense to have a camera? For the market, it would make sense to me that the one hanging over each cash register might be real. I would put one over the produce section. Then I would place any others I might have over areas where highly pilferable items are located. Your school would be thinking along the same lines, selecting areas where the mean kids hang out for example. I am wondering why you want to know which cameras are fakes anyway. Are you thinking of doing something you should not? Such as bullying others, maybe???
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