Steam Guard Mobile Authenticator Beta

We've updated the sign up process and server side behaviors and enabled another ~2000 accounts. There is no app update at this time.

You may now add a phone number to your account without adding 2 factor, to access this functionality go to your "account" page ( find the drop down with your account name in the top left, and click on "account details".
Adding a phone number will give you another password recovery option in the near future. It also streamlines the process of signing up for 2 factor.

To check if your account has been enabled for the authenticator, go to the app's Steam Guard menu and select 'Change Settings'. If your account has the authenticator enabled you will see three choices, including one saying 'Get Steam Guard codes by phone'. (If you only see two choices -- one for 'Email' and one for 'None' -- then your account isn't enabled for the authenticator yet. Patience, please).

Once again, after you add the authenticator to your account you'll be asked for the current code every time you log in to Steam. You can still choose to "remember" your login, so you won't have to type in a code every time you open the Steam client or store pages.

Please post issues and comments to the pinned thread for this. Thank you!