Is there a way to prevent a single user from logging into a database twice? (ie.more than once from different devices or desktops).
Not by default, no. There's not (any longer) a function to return a list of logged in clients.
You might, however, consider using this technique to log off other sessions with the same user name: Trigger a script on ANOTHER client | Clickworks
Thanks for your quick response. I think I can see how this would work for this application. Thanks again.
Retrieving data ...