guard dog These dark and light areas then form the video images that we see. Motion detection works by comparing successive video images. So if the pattern of light changes between frames a change in pixels the smart camera concludes that something has moved and starts to record. As it begins to record, it also sends you an alert. The camera determines when enough has changed based on the motion detection settings see below. There are different methods of motion detection, i. e. infrared heat vision and microwave. We won’t get too much into the deeper technical aspects in this piece. The basic principle is the same for most cameras. The first thing you need to do is position the camera where you intend to keep it.

34 percent of burglars entered through the front door;23 percent through a first floor window;22 percent through the back door;9 percent through the garage;4 percent entered through a basement;4 percent through an unlocked entrance;2 percent through a storage area;2 percent entered anywhere on the second floor.



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One industry researcher notes, "In 2003, there were approximately one million security guards including airport screeners employed in the United States compared to 650,000 U.