قاعدة المعرفة

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If I was to say that it is an access card, that would be correct. There are other things though that can be a credential. There are Key Fobs, Plastic insert keys, keys with logic chips built in, wireless transmitters, …and the list can go on. A credential is anything that can store a unique identifier and pass it to a collecting device when it is needed. In the case of bio-meterics your mind can store a number, your hand has a certain geometry, or what about your finger print. All of these things can and are being used as a credential. In the next few minutes we are going to explore some of the basics about these items. Some of the more common items that we will look at are:
  • Cards – Mag Stripe, Bar Code, Barrium Ferrite, Wiegand, Keypads, and Proximity
  • Smart Cards
  • Biometric
While we are looking at the different credentials we will also show you examples of the different readers that are associated with them. If the data is correct then the processor tells the lock relay to energize and unlock the door If the data is incorrect then the processor logs the attempt and does not release the door
You are going to be the processor for this example.  Push the button that corresponds to your decision.

A card is considered valid if several questions are answered correctly.
  • Is the card number recognized by the panel or the access system?
  • Is the card supposed to be used at this reader?
  • If the card is supposed to be used at this reader, then is it okay to use it at this time?
  • All of this data is stored in the system. This data is what comprises the cards “Access Level”.
In the case of the N-1000 series panels, the data is stored at the panel as well as in the system. This way the panel can operate in either a standalone mode or in conjunction with other panels. If the data is correct then the processor tells the lock relay to energize and unlock the door. If the data is incorrect then the processor logs the attempt and does not release the door. You are going to be the processor for this example. Push the button that corresponds to your decision
No discussion of card data formats would be complete without a brief look at the communication interface. An “interface” defines how two devices communicate with one another. Various HID readers can communication using a variety of well established, industry standard interfaces. The three most common are: