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How does a card access system work? A brief explanation The CardUnlike a key, each card has a unique number associated with it. This allows for management to authorize where and when this electronic keycard will unlock a specific door. Losing a card, unlike a key, is not a complete breach of security as the card number can be immediately removed from the list of authorized cards. The Card ReaderThe card reader is installed at or near a secured door. When the card is placed within proximity of the reader, the reader detects and decodes the card number. That information is then communicated to the controller. The ControllerThe controller is the decision marker. When the card number is communicated to it, the number is compared against a list of authorized users. This list is based on 3 main factors.
If the controller decides that the card is valid based on the criteria above, a pulse is sent to the lock to release and allow entry to the secured area. All controllers store this information “on board” thus no computer connection is required for operation. This is called “stand alone mode”. The controller also keeps track of which cards have been used at which doors. Other transaction information is also stored. This storage is not unlimited; our Hartman system stores 2000 transactions. The softwareThe software is a user interface allowing for the programming of all system functions. It also manages the data and stores the historical data for report functions. Each time the software is opened, an attempt is made to communicate with the controller. If the attempt is successful, all the transactions are sent to the software for archiving. If you decide to leave the software open or running all the time, each transaction is immediately sent the software.
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