Now it ”intelligently” tracks login locations for accounts, and if you’re playing ”consistently from the same place” it won’t demand a code, making it ”less intrusive”.
”If you use an authenticator – and we hope you do – you may soon notice that an authenticator prompt may not appear with every login,” posted Blizzard on their forums.
”We’ve recently updated our authentication system to intelligently track your login locations, and if you’re logging in consistently from the same place, you may not be asked for an authenticator code. This change is being made to make the authenticator process less intrusive when we’re sure the person logging in to your account is you.”
To find out more about Blizzard’s authenticator system for Battle.net accounts check out the official Account Security webpage with all the details. Do you ‘authenticate’?