Blizzard began offering the World of Warcraft Authenticator and became available in [June]] of 2008. It is available for purchase for $6.95 from Blizzard's site. It is an optional piece of hardware that prevents hackers from accessing players accounts. The authenticator is a physical device that can be fitted on a keyring. After the authenticator is linked to the player's account, the authenticator must be used every log in. The authenticator creates a unique six-digit code for the player's account.

1. Fits on a key ring
2. Available for purchase on Blizzard's site for $6.95
3. Creates unique six-digit code for WoW player's account
4. Active for a limited time
5. Valid only once

• Blizzard.com: Blizzard Authenticator FAQ

• Gizmodo: World of Warcraft getting a hardware authenticator tool (June 27, 2008)

• Technology Expert: Blizzard to Intro Hardware WoW Authenticator (June 27, 2008)

• Eurogamer: Blizzard announces WoW Authenticator (June 27, 2008)

• videogaming247: Blizzard announces WoW Authenticator (June 27, 2008)

• GamePlanet: Blizzard introduces WoW "authenticator" (June 27, 2008)

• Gamesdog: Blizzard to sell WOW Authenticator (June 27, 2008)

• WoW Insider: Blizzard Authenticator to be introduced at the WWI (June 26, 2008)

• Joystiq: Blizzard's WoW Authenticator to be revealed... (June 26, 2008)