Wednesday, February 13, 2013

Access Control Systems: Proximity Access Control

When it comes to both residential or office security, access control systems are on the forefront among several kinds of essential security products available in the market.
Access control system (ACS) is used to restrict the entrance of a person into a certain place until unless they have been given the permission of entering into that area by such security devices.
Installation of such systems at your working or residential area ensures your “all-time” safety as they well always restrict intruders. Below is the list of some of the types of access control devices that you can choose from for your home or office use. These are: proximity card (prox card); Magnetic Card Access Control, biometric identification systems, Bar code, keypads, and more.
In this document, you will be given a brief introduction about proximity card based access control devices.
Proximity card based door security device is a sought after security method in today's residential areas, offices, companies, computer rooms, R&D Labs, financial institutions, and many other places.

One interesting thing about prox device is it works without swiping it into card reader. In other words, prox card can be read without inserting it to a card reader. Now, the question that strikes our minds is- how they work without using reading device.
The core of the prox system is the elements with the help of which the entire system works. These are: the tag, the reader, the controller, and the lock.
  • Tag (card): Individuals are provided a tag, authorized by the system administrator on certain door and at specific times.
  • Reader: It is a device installed on the entry and exit point of the door.
  • Controller: This is the main part of the overall security system, as it is designed to receive all the authorization information from a PC and to store it. It opens the door lock, when the Tag ID, read by the reader, is authorized at the door.
  • Lock: This is an electro-mechanical locking device responds as directed by the controller.
In order to use Proximity Access Control Device, tag is brought close for a moment to an electronic reader unit. Each tag has a unique identity code stored on an electronic chip attached in plastic. As a result, reading device responses with a “beep” that indicates that that your card has been read. If the tag is authorized on that door, an internal signal is sent to release the door lock.

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