Cryptag Cards & Readers - Tyco EMEA / ADT Worldwide Home Page

SITEGUARD
SGA-Cryptag
Hands Free
Tags and Readers
Features
. Almost impossible to duplicate tags due to the RF circuit and
microchips being embedded in the tag
. Non-contact readability provides convenient and quick use of
access system
. “On-the-fly”, identification is available where the proximity tag
is interrogated without the holder having to stop or”show” the
tag to a reader
. Longer tag and reader life due to non-contact reading of tags
. Equipment such as portable computers can be ‘tagged’ as a
deterrent to theft
. Variety of reader ranges (maximum of 3 metres) and area
coverages available.
. Encrypted tag-reader communication eliminates interference
with other electronic and RF based systems.
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SGA-Cryptag Hands Free Tags and Readers
Introduction
Proximity and hands-free technology uses radio frequency (RF) circuits
encoded with unique data which are embedded into plastic tags which
can transmit identification data to a reader when within the reader’s RF
range. The tags to not require insertion into, or physical contact with a
reader in order for data to be obtained.
Application
SGA-Cryptag readers allow hands-free identification without the
need to insert or swipe a cards. This allows the convenient and rapid
operation of the access control system using unobtrusive readers.
Use of the shorter range readers for this application ensures that
passers-by do not activate the readers.
Longer range readers, loop aerials and master/slave reader
configurations allow wide areas, corridors and walkways to be covered,
thereby providing completely non-interventional access control or
tracking to be implemented. This is ideal for replacing turnstiles in
reception areas, tracking people or asses through a building, or to
control access to car parks.
The unique ability of SGA-Cryptag to detect multiple tags almost
instantaneously within the reader field allows a wide variety of other
applications to be implemented when the Siteguard Access system is
used with its asset tracking software module. Relationships can be
established, and exceptions reported, between people, computers,
cars and other assets. Typically alarms could be generated if assets
are detected without their assigned owners, or babies detected
without a nurse.
Non-interventional readers can be completely concealed in the fabric of
the building to provide both a covert and aesthetically pleasing solution.
SGA-Cryptag uses encrypted communications between the
identification tag and the proximity reader. This means that the
identification tags will not interfere with any other RF based system
such as retail outlet, article tagging systems, and library anti-theft
systems. SGA-Cryptag identification tags will only respond to
SGA-Cryptag readers.
Identification tags are available in a credit card size or alternatively, a
keyfob device which can be hung on a keyboard.
Operation
SGA-Cryptags are radio tags that are identified when they are in the
vicinity of a reader. The reader sends out interrogation signals and all
tags within its range respond with their own return signal. In this way,
several tags can be present at the same time and all will be identified
successfully, given sufficient times.
The tags are active, which means that no power is required from the
reader and therefore the return signal can be sent from further away.
This extended range allows true hands-free operation.
SGA - Cryptag Reader Types
Mullion Reader
This Reader type has a small radio transmitter/ receiver which can be
mounted on a wall or door mullion. This ‘mullion head’ is then wired
back to a controlling unit which stores the relevant identification
database for that access station. Mullion readers are suitable for
internal and external use.
Standard Reader
The standard SGA-Cryptag readers are a single piece unit, easily
mounted on the wall or reception desk facing the area to be monitored.
A tag will receive an interrogation signal from the reader if it passes
within a range of 90 centimetres. This standard readers can be used
either indoors or outdoors.
Loop Aerials
In order to cover a wide corridor or car park entrance, an alternative to
dividing the space using large readers is to run a loop aerial around the
walls, floor and ceiling of the area to be monitored. This ensures that
each tag is identified even if the owner walks up the centre of the
corridor.
The loop aerials are connected back to a controller unit which
interfaces to the SGA door controller.
Installation Advice
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Do not install on or near a metal surface
Do not install near computer monitors
Do not put two readers too close together, they should be at
least 2.5 times their rang away from each other.
Use a well smoothed 12 volt power supply to the reader
such as that is supplied by the SGA-IAC series door
controller.
Readers should be wired in 6 core screened cable (Belden
9503 or equivalent) up to a maximum distance of 50 metres
between door controller and reader.
Contact your local ADT Fire and Security
office or phone free on:
0800 010999
Head Office: ADT Fire and Security plc,
Security House, The Summit, Hanworth Road,
Sunbury-on-Thames, Middlesex, TW16 5DB.
Website: www.adt.co.uk
PSAC204A Issue 4
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