The best way would be for you to first;
Disable the shift bypass key. You could enable from a command button on your switchboard.
Second, you could set a password in a Module design's Tools\Properties.
Third, you could make the application an .mde file.
For distribution I would definitely recommend .mde.
If you just have it local, I would set a password in any Module's design and also disable the Shift ByPass Key.
Thomas Bailey
a/k/a TomCat