Access - Glossary of Terms Format
The structure of the data stored in an access control card. Most access control system OEMs use their own unique formats.
Gauge
The size of a wire in diameter with higher gauges being smaller, and lower gauges being larger.
Global Unlock
A normally-open input that, when closed, generates a signal that unlocks all doors in the access control system.
Graphics
Available on SGA. Customers site drawing are either produced or taken from CAD file. SGA uses bitmap files for Graphic maps - which can be site photos etc. Icons can then be added for monitored/controlled points, which are animated to show their status.
Guard Tour
A defined route of a security guard. GUI (Graphical User Interface)
Technique used to display information on a television screen or other display device in order to make the operation of some equipment easier or provide enhanced functions.
Hand Geometry
A biometric access control technology that verifies a person's identity by using the variations in hand size, finger length, and finger thickness.
Hall Effect
Monitoring built in some magnetic locks to ensure that the holding force is up to the specified levels. Provides monitoring to overcome the typical methods of reducing holding force - grease, film etc - making forced entry much easier.
Hand
Free The use of long range readers/Door loops with advice tags to monitor the movement of personnel and assets.
Hi
Co Type of magnetic stripe tape - see Coercivity
Identification
The one-to-many process of comparing a submitted biometric sample against all of the biometric reference templates on file determine whether it matches any of the templates and, if so, the identity of the enrollee whose template was matched. The biometric system using the one-to-many approach is seeking to find an identity amongst a database rather than verify a claimed identity.
Identification Card
A card that stores the information necessary to verify the identity of the cardholder.
Iris Recognition
A physical biometric that analyses iris features, found in the colored ring of tissue that surrounds the pupil.
ISO Cards
A card, which meets the dimension requirements for credit cards. Used for Photo ID printing etc. Available for Proximity technologies.
Jumper A patch cable or wire used to establish a Kilobits Per Second
A measure of the speed that data can travel. Measured in thousands of bits per second. This is the unit commonly used when determining network connection speed.
Lan Local Area Network
An IT data communication network for a local geographical area. This may be within one building oe a cluster od buildings on a site/campus.
LCD
Liquid Crystal Display. A screen for displaying text/graphics based on a technology called liquid crystal, where minute currents change the transparency of the by changing the polarization angle. The advantages of LCD screens are very small power consumption (can be easily battery driven) and low price of mass-produced units. The disadvantages are narrow viewing angle, slow response, invisibility in the dark unless the display is back lighted, and difficulties displaying true colors with color LCD displays.
LED
Light Emitting Diode. A semiconductor diode, which produces light when a certain low voltage, forward bias, is applied to it. Like a normal diode it conducts only in one direction.
Magnetic Lock
A door lock made up of an electromagnet and a strike plate. The electromagnet is mounted in the door frame; the strike plate in the door. When power is applied to the electromagnet, the strength of the electromagnet keeps the door locked.
Magnetic Stripe Card
An access control card with a strip of recordable magnetic material, on which data is encoded.
Magnetic Stripe Reader
A reader capable of reading and interpreting cards using magnetic stripes to encode data.
Mifare
Smart card chip which can be used for access control. Each chip has a unique number, which can be read by an access control system - or a sector of memory within the chip can be programmed with an access control number for use by the system.
Monitored Access control door or lock that has a contact 176 Sales and Support, Call: 1300 ADI ADI Normally Closed
The state of an input device that continually keeps a circuit closed or complete until forced by an action or event to open that circuit.
Normally Open
The state of an input device that continually keeps a circuit open or incomplete until forced by an action or event to close that circuit.
OEM
Original Equipment Manufacturer. Optical
A finger image capture technique that uses a light source, a prism and a platen to capture finger images.
Passive Card
A proximity device whichis powered once the card/tag enters the proximity reader field. There is no on-board battery -therefore read ranges are reduced BUT there is no battery to replace.
Photo ID
Adding a photograph and printing other details onto an ISO card. This can include customer's company logo etc.
PIN
Personal Identification Number. Used with keypads - should be considered for use in addition to any reader technology at the perimeter of a site to reduced the risk of lost cards being found and used by unauthorised person(s).
PIR
Passive Infra Red. A technology, which uses the bodies, heat to detect presence and then generate a signal. can be used for hands free control. Note any heat sources can detected by a PIR.
Protocol Convertor
A device used to change data formats - from a PCs serial port (RS232) to that required by the controller communications port.
Peer To Peer
A simple kind of network that sets up a conversation between two machines without a middleman. Both carry out the same functions.
Personal Identification Number PIN A series of numbers and/or letters associated Technical Support, Call: 1800 220 345
www.adiglobal.com/au Key Tag
An access control identification device assigned to an individual to give that individual access rights to an access control system. Typically, the tag is attached to a key ring or similar device to provide quick, convenient access to the tag. Each tag has a unique identification code. That identification code is used by a controller to determine through which doors and at what times of day cardholders are granted access to a secure area.
Modem
A device used to convert data (usually RS232) on into an analogue format for transmission over
telephone lines - and then converts back again. One Modem required at each end of line.
Network
A series of controllers, all connected via a communications cable. A group of computers, all connected via a communications cable.
circuit, often temporarily, for testing or diagnostics.
Keyfob
Proximity tag supplied in a form that can be put on to a key ring.
Keypad
An alphanumeric grid which allows a user to enter an identification code.
fitted to it to show its position/status. Contact can be either magnetic or built in to the lock/release - separate magnetic contact is preferred.
Magstrip
Contact form of access control - the magstrip is run past read heads within the reader. Low to medium security as the cards can be duplicated.
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