Attaching a Blizzard Authenticator to your Battle.NET account gave you some stupid Core Hound pet in World of Warcraft. Other than the greatly enhanced security, are there any similar (trite, cosmetic) benefits in Diablo III?
Diablo – Are there any bonuses for using an authenticator with your Diablo III account
diablo-3
Best Answer
Not at this time.
At least I have not received any for my previously purchased authenticator (that I bought for WoW).
I should also note that the core hound I got for my authenticator in WoW was bind on account, so it was available across all of my WoW characters and their servers. If something were done in Diablo III, like the angel wings and dyes for purchasing the collector's edition, it would probably be the same way.