Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific, limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point wireless links. CCTV is often used for surveillance in areas, which need security, such as banks, casinos, and airports or military installations.

The video from these cameras could be recorded for any required number of days locally or on a central location using Physical security describes measures taken by corporate that are designed to deny access to unauthorized personnel (including attackers or even accidental intruders) from physically accessing a building, facility, resource, or stored information and guidance on how to design structures to resist potentially hostile acts

Essentially a good physical security solution is a combination of defensive principles that are designed to do the following

• Deter • Delay • Detect, and • Respond (and ultimately, deny access)

Ethernet or Service Provider lines on Digital Versatile Recorders with additional features like motion detection, high compression of video signals using the latest video compression technologies in various video formats