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Access Control Systems

Introduction
Access Control Systems
Access control systems control who, when and where people enter your premises. These systems can help you protect employees, visitors, property and sensitive information by only allowing personnel authorised to enter that area, enter.
Complete Integrated Security Systems
Access control systems offer the answer to a wide range of threats to your security, but it is only one aspect of the security provisions you should consider. By integrating access control with other security systems, it is possible to greatly increase the level of protection provided. Access control systems can be intelligently linked to other systems including CCTV surveillance, electrified power fence and intruder detection, giving a complete integrated security system.

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Typical Applications
ENTRY LEVEL ACCESS CONTROL
A typical entry level access control system could consist of several stand-alone door controllers with the capacity to monitor several doors, possibly as an extension of an intruder alarm system. A typical system could incorporate proximity cards or tokens, or magnetic swipe cards.
This could apply to small offices or retail outlets.
MID LEVEL ACCESS CONTROL
A typical mid level access control system could consist of a central PC based controller, with the capacity to monitor hundreds of doors with potentially thousands of users based at multiple sites with remote networked door controllers. A typical system could incorporate proximity cards or tokens, or infra-red swipe cards.
This could apply to schools or distribution centres.
TOP LEVEL INTEGRATED ACCESS CONTROL
A typical complex integrated access control system could monitor many thousands of doors and users based at multiple sites. A typical system could support multiple technologies, such as smartcard and biometric readers, to store personal information unique to the authorized user.
This could apply to hospitals, military and maximum security sites.

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Types of Access Control
Description
Access Control systems interface using ‘Reader Technologies’. They vary widely from simple PIN number keypads to swipe cards or high tech biometrics readers.
Key and Lock combined with PIN code entry
One of the most common types of access control systems is the keypad. This comprises a user and terminal with a series of numbered push buttons, or a touch-sensitive pad, connected to the lock release mechanism via a control unit inside the entrance.
Magstripe Readers
This technology, which is more commonly referred to as ‘Swipe Card’, is widely used and there are many choices. It is known as a ‘contact’ type approach.
Proximity Readers
The advantages of this technology over magstripe (card swipe) readers lies in the fact that it is contact less. The average read range for a close proximity reader is up to 100mm, thus the card doesn’t have to come into physical contact with the reader unit.
Smartcard Readers
Smartcard readers have the advantage of being able to store additional information such as biometric templates. There are two variants of smartcard reader, these are proximity, which is contactless and insert, which has a contact chip. Both can be supplied in ‘read only’ or ‘read/write’ formats to suit your needs.
Biometric Readers
This type of reader only allows entry if the authorised user’s unique human characteristics are authenticated, which significantly raises the level of security. Different types are available, which store the geometric patterns of the user’s retina, hand, face or fingerprint in an electronic memory.
Hands Free Readers
Using active cards which transmit a signal, you can automatically unlock or open a door when the receiver detects the card. This makes it ideal in respect of the Disability Discrimination ACT (DDA), as no action is required by the card bearer and for vehicle barrier control, as the driver doesn’t have to stop to enter a code or swipe a card.
ANPR (Automatic Number Plate Recognition)
Automatic Number Plate Recognition is a CCTV based application with specialised cameras to enable identification, logging, and monitoring of vehicle number plates. ANPR can be utilised as a very successful access control system, which can be programmed to allow intelligent automated control of vehicles access barriers for authorized vehicles, whilst also triggering an alarm upon detection of unrecognized or prohibited vehicles. This adds efficiency, as well as security, to site by allowing the smooth flow of authorized traffic. ANPR is a powerful tool and is suitable for use in any situation where vehicle monitoring is necessary, from local volume traffic, right through to high security environments, boarder control and counter terrorism measures.

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