Access Control
Physical access control is a matter of who, where, and when. An access control system determines who is allowed to enter or exit, where they are allowed to exit or enter, and when they are allowed to enter or exit.
Turnstiles
A turnstile or speedlane is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce one way human trafic. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, security credential.
CCTV
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.