An HID proximity card is a card the size of your driver's license or credit card. The card contains embedded information that will activate and open doors so that the holder of the card can enter. The card alone does not have the capability of accessing an area. The card must be combined with additional system components. The complete system works in conjunction to provide security for a specific area. HID Access ID Cards
Other items in the system are a card reader, an access control panel and a computer to power the system. As a complete unit, the system functions as a security officer that reviews credentials and allows authorized people in the building at specific times of the day.
Embedded in the card is a specific binary code (ones and zeros) that have a specific sequence making the card unique. The code format is picked up by the card reader. The reader then transfers the coding to the control panel where it is analysed to see if the cardholder is authorized to enter the area. Most of the cards do not have any additional code in the card; however, some cards do contain additional coding that the reader will take in. The reader will only transfer the sequence code to the access control panel for review. Reorder ID Cards
Upon receiving the data, the controller processes the code. The first step of the controller processing is the analysis of the length of the data string and also the format of the code received. If the coding fits in with the specifications that have been set for the door, the controller then begins to review the facility code and site code. These must also match the system specifications for continued review of the card data.
If the card matches all of the previous criteria, the controller reviews the card number. The number may be authorized for a specific times and dates. If everything matches, the lock relay will be activated and the door will be opened. Reorder ID Cards from HID
If something in the sequence does not match, the controller will not authorize the door to open. Some systems will provide a response to the card holder as to why the door will not be activated. Other systems provide no response.
For those who maintain the security access system, the system can be modified as needed through the computer. The software application accessed from the computer will allow an authorized person to update card holder information, enable and disable card activation, configure the door access hardware and provide necessary reporting about the system use.
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