Actually that's a good point, dave. Even if you can't find the GPO, a script could easily alter the registry entry to tell Windows not to cache the credentials [setting the key to 0 would wipe out any previously held logons].
Setting it for a suitably short period of time - say a few days to a week - would mean people should get into the habit of bringing their laptops in.
Setting it for a suitably short period of time - say a few days to a week - would mean people should get into the habit of bringing their laptops in.