Keyscan Technical Guide (PC109x - 04.12)
63
Liability Warning – 26 Bit Wiegand Card Format
KEYSCAN systems are factory defaulted for KEYSCAN's proprietary 36-bit Wiegand format cards.
KEYSCAN systems can be modified to recognize a wide range of additional access card formats. Some of these
formats are proprietary to other system manufacturers. Some other formats, notably 26-bit Wiegand, are
“open”. This means that card manufacturers will supply any card number sequence requested. The “open” 26-
bit format means duplicate cards exist.
Installing dealers and end-users should be aware of the risk. Because the 26-bit format is unregulated,
duplicated card numbers can be easily obtained and could be used to gain unauthorized access to a facility.
KEYSCAN strongly recommends that installing dealers apprise the end user customer of the risks posed by 26-
bit cards and have the end user customer acknowledge they understand the risk by signing the “Waiver of
Liability”.
Waiver of Liability
Keyscan system end user (End User Name - )
acknowledges that he/she has been advised that the KEYSCAN system installed by (Dealer Name -
) in the end-user premises has been
modified from the factory original settings to accept Wiegand 26 bit format cards.
End user acknowledges that he/she is aware that duplicate cards may exist in this format and that a duplicate
card could be used to gain illegal access to his/her facility.
(Dealer Name - ) SHALL NOT BE
RESPONSIBLE FOR ANY CONSEQUENTIAL, CONTINGENT, SPECIAL OR INCIDENTAL DAMAGES whatsoever,
except as specifically set forth in the LIMITED WARRANTY, caused by illegal use of duplicate 26 bit access
cards.
DEALER NAME: END USER NAME:
PER: PER:
SIGNED: SIGNED:
DATED: DATED:
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