Perhaps not as daft as th title might sound: Blizzard have today introduced an optional extra layer of security for WoW players worried about having their accounts hacked and stolen. The Blizzard Authenticator is a key fob sized piece of hardware that produces six digit codes to be entered after your standard user name and password but before you gain access to the account.

The device itself will set you back all of 6 Euros + shipping.

More information can be found in the official FAQ.