optical turnstile

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• Optical turnstile — 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… …   Wikipedia

• Turnstile — A turnstile, also called a baffle gate, is a form of gate which allows one person to pass at a time. It can also be made so as to enforce one way traffic of people, and in addition, it can restrict passage to people who insert a coin, a ticket, a …   Wikipedia

• Turnstile (disambiguation) — A turnstile is a pedestrian gate.Turnstile may also refer to: *Turnstile (symbol), symbol used in mathematics, logic and computer science *Turnstiles, Billy Joel album *Turnstile antenna, set of two dipole antennas *Optical turnstile, physical… …   Wikipedia

• Access control — is the ability to permit or deny the use of a particular resource by a particular entity. Access control mechanisms can be used in managing physical resources (such as a movie theater, to which only ticketholders should be admitted), logical… …   Wikipedia

• Door — For other uses, see Door (disambiguation). A door is a movable structure used to open and close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space. When open, they admit ventilation… …   Wikipedia

• Access badge — An access badge is a credential used to gain entry to an area having automated access control entry points. Entry points may be doors, turnstiles, parking gates or other barriers.Access badges use various technologies to identify the holder of… …   Wikipedia

• Door security — relates to prevention of door related burglaries. Such break ins take place in various forms, and in a number of locations; ranging from front, back and side doors to garage doors. Contents 1 Common residential door types 2 Security weakness of… …   Wikipedia

• Visitor management — refers to tracking the usage of a public building or site. By gathering increasing amounts of information, a visitor management system can record the usage of the facilities by specific visitors and provide documentation of visitor’s whereabouts …   Wikipedia

• Datacenter star audit — The Datacenter Star Audit (DCSA) is one of several services[1] of eco – Association of the German Internet Industry e.V. (German) and was designed as a seal of approval for data centers. It examines and evaluates objectively infrastructure and… …   Wikipedia

• Antenna (radio) — Whip antenna on car …   Wikipedia