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An optical turnstile is a physical security device designed to restrict or control access to a building or secure area. Optical turnstiles are usually a part of an access control system, which also consists of software, card readers, and controllers. Optical turnstiles operate much like regular mechanical turnstiles, except that they rely ...
Access control methods are used to monitor and control traffic through specific access points and areas of the secure facility. This is done using a variety of systems including CCTV surveillance , identification cards , security guards , biometric readers , and electronic/mechanical control systems such as locks, doors, turnstiles and gates.
The New York City Subway primarily employs two types of turnstiles: a waist-high turnstile, and a full-height turnstile known as a High Entry-Exit Turnstile (HEET). The waist-high turnstiles, the most prominent in the system, were installed beginning in 1993 along with the implementation of MetroCard, though they originally accepted tokens.
Turnstile. A turnstile (also called a turnpike, gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce one-way human traffic. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, transit pass ...
Example: coin-operated turnstile State diagram for a turnstile A turnstile. An example of a simple mechanism that can be modeled by a state machine is a turnstile. A turnstile, used to control access to subways and amusement park rides, is a gate with three rotating arms at waist height, one across the entryway. Initially the arms are locked ...
A passive proximity card for door access. A proximity card controlled turnstile A passive proximity card with the plastic casing opened to show components: antenna coil and integrated circuit (black object bottom center) Anatomy of proximity card: coil and IC The proximity card coil of an electronic fare collection system
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