This is for faculty monitoring wherein they would scan their cards to "log-in" to their specified class time schedule, logging-in would signify that they were "present" in that specified schedule. That is quite easy, the problem is, how could I register "absence" for time schedules? The "only" way I could think of, as of now, is to generate a record for each class schedule for each faculty and register it as "absent", only marking it as "present" when they have scanned their cards.

Any other idea you could suggest? TIA