Learn About Standalone & Network System

A controller is the brain of the system and can operate independently of any computers. Seen another way, it is actually a dedicated-task computer with its own operating system and software. It communicates with the reader, compares the data read by the reader with the information stored at its memory, check its programming setting and output data to the lockset - to either lock or unlock the door, granting or denying access.

Standalone Reader Controllers

The HID EntryProx Reader is an example of a standalone reader controller. That is, the reader and the controller are not separated but one single unit. Such units are economical and very suitable for single door access control application where you only need to control a single door - namely the front door.

However if you want to continuously monitor who came in or out, or if you need regular reports done, standalone readers would not be appropriate as most of these units does not interfaced to a computer.

It is designed to be completely standalone and any programming of new cards or deletion of cards are done via its keypad.

Networked Controllers

Unlike standalone reader controllers where reader and controller is combined in one single PCB board, networked controllers are separate and are normally housed in its own metal housing complete with power supply and back up batteries.

Network controllers can support up to 16 readers and are often placed in some central location.

Where required, network controllers can be linked and connected to a computer and information is shared. Typical application would be companies that may be housed over several floors or over a large area and there are many entry and exit points.

Controller - the brain of the system that checks if the data presented by the reader is valid and whether access should be granted

Electronic Locks - used to lock or unlock doors

Variety of Readers Technology

There is a wide range of readers and the associated technology; from the simple PIN keypad, to Card Readers, to the different range of biometric readers.

The most basic of all readers is the simple numeric keypad where a user need only to enter the correct 4 digit PIN to gain access. While this is convenient for the user, it is also the lowest form of security. Anyone who saw you enter your PIN would be able to gain access. Hence PIN only keypad is not recommended for exterior doors.

Magnetic strip card readers used to be popular (it is still being used - think of your ATM Card and Credit Cards) though it is fast being replaced by proximity cards. Behind the face of the card is a magnetic strip that allow data to be stored in magnetic fields. Unfortunately the data can be distorted when the card is subjected to strong magnetic field or to scratches, wear and tear over time.

The cost of proximity card have drastically reduced over the years, making it the most attractive alternative. With proximity card, there is no need to swipe the card, hence no wear and tear All that is needed is to flash the card at the reader and the data can be read.

What is gaining ground is the use of biometric, particularly fingerprints. Biometric readers can read and recognize the fingerprint pattern, increasing the security of the premises. Unlike the card system, it is not possible to pass your fingerprints to someone else. And with the newer batch of fingerprint biometric reader, it can differentiate "live" fingerprints from "dead " fingerprints.

To learn more, click on the links below:

• Card Access System
• Standalone and Networked
• Proximity Technology
• Fingerprint Biometrics