I just purchased an authenticator from Blizzard (haven't used it yet) for my Battlenet account and the instructions are for for one computer only. I have a few questions if you multiboxers don't mind answering.
I have 5 accounts on my Battlenet account;

1. If I run each account on its own computer (5 computers) do I have to plug in the authenticator on each computer every single time I run the game or is it a one shot deal until i move to a different IP address?

2. Can I use the authenticator on more than one computer? Or will it block me or something if I try?

3. How do you other multiboxers use an authenticator on multiple computers or any suggestions that might help?

Every thing i read about using authenticators on this site usually only covers one computer, I use 5 computers. Just didn't want to try the authenticator and get locked out of the game for doing something wrong using it. Trying to contact Blizzard is a pain in the butt and takes hours IF you ever get thru their lines being busy or backed up.