First: Closed circuit television systems or the so-called (surveillance systems).
These systems are the most common and well-known among the systems, as they are used in public institutions, roads, private property insurance, and military institutions with the aim of securing and following up on the place to be protected in full and in full.

Second: Access control systems.
It is responsible for regulating access to certain areas with security mechanisms that allow entry to certain people after verifying their credentials. Examples of this system are hotel room doors, metro gates that operate by card, member entry gates used in social clubs, and many others.

Third: Intrusion detection systems. . It is one of the modern systems that are used to detect any illegal intrusion into the secured areas through the use of motion sensors that operate the alarm when any suspicious or illegal movement is detected inside the place.