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Inside every camera is the image sensor which the lens of the camera directs light to. The moment light reaches the image sensor, pixels then record how much light they receive. 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.

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Chapter 8: Crime and the threat environment. Principles of security and crime prevention, 4th ed. Cincinnati, OH: Anderson Publishing. Friedman. …… Private SecurityThe various factors that influence both the definition and the perception of private security are typically environmental but can be internal and external to the issue of security itself. In most developed nations, the state provides security forces that are paid for by tax payers local, municipal, state and federal police, and military forces; however, private security forces, typically operated by ex military officers who bring their training and experience into the private sector to fill gaps in the market where demand cannot be satisfied by state security apparatuses alone, do exist and do operate both in developed and developing nations.