CCTV is commonly used for a variety of purposes, including:

Maintaining perimeter security in medium- to high-secure areas and installations.

Observing behavior of incarcerated inmates and potentially dangerous patients in medical facilities.

Traffic monitoring.

Overseeing locations that would be hazardous to a human, for example, highly radioactive or toxic industrial environments.

Building and grounds security.

Obtaining a visual record of activities in situations where it is necessary to maintain proper security or access controls (for example, in a diamond cutting or sorting operation; in banks, casinos, or airports).