Hello. Is there a relatively fool-proof way of preventing code within a
file from working after a specific date?
Basically, like a licensing expiration. After the initial period is over, I
want the file to stop working...but in such a way that a somewhat savvy
programmer could not go in and, for example, remove a line in the code that
prevents the macro from firing.

I was thinking an open_event that checks the date, and prevents the file
from even being open? I don't know...I'm grasping here. Any ideas?
Thanks!!