I just got my authenticators yesterday and was surprised to see that there's not a way to replace a battery. This lead me to think about what happens if I lose it, or it fails for some reason. They only let you buy two, and I'm sharing one across five acounts and the other across three. Could I write a few numbers down, not using them of course, and save them on paper? I would do this just so I could get into account management and turn off the authenticators until I can get another one. Does anyone know if this will work? It says to call Blizzard if its lost or stolen, but I've read the horror stories about people trying to contact billing, or customer service. Has anyone had a problem like this yet. If so, how did you handle it?