Sites codes - what are they
Posted: Thu Jul 23, 2009 12:50 pm
http://www.kantech.com/applications/faq_site_codes.aspx
Sites codes, or families, were originally created to increase card production to a larger number of 26-bit cards by duplicating cards rather than increasing the available number of user codes.
The cards were ordered for a specific site and the manufacturers were initially keeping track of what had been shipped where.
When a new site was installed, it was provided with a site code that had never been shipped to that specific geographical area, thus maintaining the level of security of the card.
Furthermore, since all the cards at a specific site had the same site code.
the control equipment did not have to store the site code in each of the user codes, reducing memory requirements of the hardware.
One problem is that a lot of access systems will not work well with the site codes. So many tech did not setup the systems with site codes.
a 26-bit card goes from 1-65535 cards or numbers
If you have 1000 employees programed for a door there is there is a 1 in 65 chances that a card from a different company will open your door.
site codes number from 1-255, if the site codes are working right, big differences 255*65=
Sites codes, or families, were originally created to increase card production to a larger number of 26-bit cards by duplicating cards rather than increasing the available number of user codes.
The cards were ordered for a specific site and the manufacturers were initially keeping track of what had been shipped where.
When a new site was installed, it was provided with a site code that had never been shipped to that specific geographical area, thus maintaining the level of security of the card.
Furthermore, since all the cards at a specific site had the same site code.
the control equipment did not have to store the site code in each of the user codes, reducing memory requirements of the hardware.
One problem is that a lot of access systems will not work well with the site codes. So many tech did not setup the systems with site codes.
a 26-bit card goes from 1-65535 cards or numbers
If you have 1000 employees programed for a door there is there is a 1 in 65 chances that a card from a different company will open your door.
site codes number from 1-255, if the site codes are working right, big differences 255*65=