#0 - Nov. 9, 2010, 11:08 p.m.
Blizzard Post
As part of our ongoing commitment to account security, we're happy to announce the release of our newest account security feature, the Battle.net Dial-in Authenticator!

Much like our current physical and mobile authenticators, the Battle.net Mobile Authenticator is an optional, additional layer of security to help prevent unauthorized account access. However, unlike the others, this service actively monitors your account and will only request additional authorization from you when a potentially unauthorized login attempt occurs.

For a more detailed description of this service, check out our announcement on the new Community blog or visit our Battle.net Dial-in Authenticator FAQ!

Battle.net Dial-in Authenticator Now Available
http://us.battle.net/wow/en/blog/1113829#blog

Battle.net Dial-in Authenticator FAQ
http://us.blizzard.com/support/article/35806