Looks like another option for authentication is on the way! ArenaNet’s Security Coordinator, Mike Davis, posted information around the company’s next steps in securing accounts via two-factor authentication.
As part of our ongoing commitment to security in Guild Wars 2, I am pleased to announce that we are making a mobile two-factor authentication solution available for beta testing, effective immediately.
Mobile two-factor authentication is an alternative means of securing your Guild Wars 2 account, and like e-mail authentication, is optional but strongly encouraged. Rather than sending you an e-mail when unauthorized login attempts occur, the game (or any of our online web sites) will prompt you for a six-digit number any time you log in to a Mobile Authenticator-protected account. Using a freely available app on three major smartphone platforms – iOS, Android, and Windows Phone – you can obtain the correct six-digit number unique to your account. These numbers change every 30 seconds and can only be used once; this ensures that without your mobile device, an attacker would not be able to compromise your Guild Wars 2 account.
You can find the entire breakdown and how to install through Mike’s original post.