
74 ATS Designers Guide
Thanks to several safeguard parameters mentioned above:
• The security code of the card has 128
4
possible combinations.
• The values for the system codes can be from 0 to 2047
• The cards can have numbers from 1 to 65535
There are 3.6*10
16
different user cards.
A high level of uniqueness of each of the programmed card, along with the implemented
safeguards, and limitations in the access to them, causes the card and reader system to
provide a high level of security, taking into account all of the abovementioned risks.
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