Password required to change system time/clock

[Philip Ho]

Dear all,

There is one application which uses system time to keep track of the
work progress of the worker (user). But, as you know, the worker (user)
can easily change the system time in the Prefs application.

Are there any method to force a password login before the user can
change the system time? I understand that it possibly needs hacks. But
can hacks intercept the time change?

I know that there is a global launch code sysAppLaunchCmdTimeChange
which is launched AFTER the user changes the time. But, I think that
AFTER the user changes the time, I can at most log this time change
activity in the database but cannot undo the action. Can anyone please
help?

Best regards,
philip