An anonymous reader writes "WoW.com is reporting that a trusted source has informed them that Blizzard is giving serious considerations to making authentricator's mandatory on all Battle.net accounts (including to play World of Warcraft). The authenticators function the same as ones provided by most banks in that in order to login you must generate a number on the external device. Blizzard already provides a free iPhone app that functions as an authenticator. The source stated "it is a virtually forgone conclusion that it will happen". The move comes after large spates of compromised accounts that left Bizzard game masters severely backlogged by restoration requests."