A video surveillance system (CCTV) is a TV system whose signal is not broadcast publicly, but is monitored by a limited circle of users, most often for the purposes of ensuring better security.
Video surveillance systems rely on the strategically accurate location of the video cameras and restriction of unauthorised access to the monitors. The system is developed in such a way that access to the transferred data is granted only to certain users.

In the past, video surveillance systems used small, low-resolution, black-and-white monitors, without interactive capabilities. Nowadays, the modern systems use high resolution and allow system administrators to zoom in the objects, or track objects or people. They can also be used for video conference calls.

Video surveillance systems are used for a wide range of applications, including:

  • Perimeter security
  • Traffic monitoring
  • Monitoring and recording people