You must press the button on your Authenticator and enter the code it displays to complete your login. Can I apply my Blizzard Authenticator to more than one account? Yes!

If your Microsoft Authenticator app is not working or displaying code for the accounts, then follow the suggestions to fix the issue using multiple methods.

Set to be debuted at the Worldwide Invitational, the Blizzard Authenticator is a small device which is associated with your WoW account. It generates a random six-digit code which must be entered ...

This was announced last night, so we're sorry for missing it. Blizzard's announced the World of Warcraft Authenticator, "an electronic device that generates a six-digit security code at the press ...

The code will be required at every login to the account, whether at the game client or the official website. The Authenticator will go on sale for EUR 6 (GBP 4.75) at Blizzard's World Wide ...