7 Simplified access rights evaluation
The model of access rights contains time schedules and a table of holidays. A block diagram
for access right evaluation can be seen on Pic. 5.
READING ID
(and PIN)
ID FOUND
NO
UNKNOWN
YES
YES
Valid PIN
or reader
without PIN
NO
ACCESS DRIVEN
BY TIME SCHED.
NO
YES
ACCESS ALWAYS
GRANTED
NO
INVALID
INVALID
PIN
Pic. 5: Simplified access rights evaluation
Page 22
YES
NO
HOLIDAY?
YES
NO
ACCESS GRANTED
FOR HOLIDAY
NO
AND ACTUAL TIME
YES
VALID
ACCESS GRANTED
FOR ACTUAL
DAY & TIME
YES