8Overview
Figure 2 Guest functionality diagrammed
The diagram uses the following issue code look ahead values:
Look ahead function Value
Offset 1
Range 3
Number of issue code digits 2
The next diagram shows what happens when the issue code has reached its limit. The issue code look ahead
values remain the same.
Lost card Newly
encoded
card
Issue codes
Auto
update
offset
of 1
range
of 3
valid
issue
codes
new offset
new
range
lost card
does not work
B.A.S.I.S. G Lock Same B.A.S.I.S. G Lock
after use of the 1001
issue code 01 card
Issue codes
00
01
02
03
01
02
03
04
1001 issue code: 00
1001 issue code: 01
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