Your BattleTag is a player-chosen nickname that will be used to identify you across all of Battle.net—on our websites, in our forums, and in Blizzard games such as Diablo® III. Choose to become BattleTag friends with another player, and you’ll have access to a number of communication tools that make it easier to stay in touch and play the way you want, all while maintaining the anonymity of an online handle.
Once you choose your BattleTag nickname, it will serve as your unified public identity across all of Battle.net—on our websites, in forums, and in games such as Diablo III, both in public chat and in groups. BattleTags aren’t unique, so you can choose whatever name you want (as long as it adheres to the naming policy). Each BattleTag is automatically assigned a numeric code to form a unique identifier that you can share with others.
Once two players agree to become BattleTag friends, they’ll have access to a variety of powerful communication tools similar to those available to Real ID friends. You’ll be able to see any of the characters your friends are playing when they’re logged in, chat cross-game, invite your friends to groups, and more. You can also set yourself as Available, Busy, or Away for your friends to see.
With BattleTag, friends can chat cross-game, cross-realm, and cross-faction across all supported Blizzard games, including World of Warcraft®, StarCraft® II, and Diablo III. BattleTag also gives you access to powerful in-game features, such as the ability to form cross-realm World of Warcraft groups with your BattleTag friends.
When you become BattleTag friends with another player, both of you will automatically be able to see each other’s active characters on friends lists whenever you’re both online. You’ll even see any characters your friend creates in future Blizzard Entertainment games, carrying your social network forward and helping you stay connected with the people you enjoy playing with most.
Many of the BattleTag features above will be available in Diablo III at launch, and we’re currently in the process of integrating BattleTag features into existing games such as StarCraft II and World of Warcraft. Our goal is to help BattleTag friends stay connected no matter which Blizzard game they’re playing, making it easier for people to engage in cross-game chat, see what friends are up to on Battle.net, and more.
Check out the FAQ for more information.