Information regarding managing an Authenticator and the migration of the Battle.net Authenticator to the Battle.net Mobile App

How to attach an Authenticator to your Battle.net account

Information about removing an authenticator you did not attach

Information on using the same Battle.net Authenticator on more than one Battle.net account

Information on unlocking the four extra backpack slots in World of Warcraft, and what happens when you remove your authentication features

Information about this error message and what it means.

What to do if you can't resync your authenticator.

What to do if the serial number at the back of the physical authenticator is scratched off

How to set up the same Authenticator on more than one device.

Information about securing an account that is getting verification requests that they did not initiate