Access control means to authorize, restrict or deny entrance or exit of people and/or vehicles into a specific area.
It is used to protect property, employees and other assets such as inventory, equipments, information and cash.
Although access control can refer to any method for achieving this, such as locks and keys or security guards, it specifically describes a more effective, high-tech means of protection.
Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors.
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.
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).
A biometric system is a technological system that uses information about a person (or other biological organism) to identify that person. Biometric systems rely on specific data about unique biological traits in order to work effectively. A biometric system will involve running data through algorithms for a particular result, usually related to a positive identification of a user or other individual.
Biometric systems is divided into two categories