Security, Physical 6
Security, Physical 6 : Elements and design: (4) Identification: The last layer is video monitoring systems. Security cameras can be a deterrent in many cases, but their real power comes from incident verification and historical analysis. For example, if alarms are being generated and there is a camera in place, the camera could be viewed to verify the alarms. In instances when an attack has already occurred and a camera is in place at the point of attack, the recorded video can be reviewed. Although the term closed-circuit television (CCTV) is common, it is quickly becoming outdated as more video systems lose the closed circuit for signal transmission and are instead transmitting on IP camera networks. Advances in information technology are transforming video monitoring into video analysis. For instance, once an image is digitized it can become data that sophisticated algorithms can act upon. As the speed and accuracy of automated analysis increases, the video system could move from a monitoring system to an intrusion detection system or access control system. A video camera could potentially data to a processor that outputs to an electronic lock, making a person's visage the key. When actual design and implementation is considered, there are numerous types of security cameras that can be used for many different applications. One must analyze their needs and choose accordingly. Note that video monitoring does not necessarily guarantee that a human response is made to an intrusion. A human must be monitoring the situation realtime in order to respond in a timely manner. Otherwise, video monitoring is simply a means to gather evidence to be analyzed at a later time
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