I've built a version of Google Authenticator for Pebble. Now available in the app store!

The app can store up to 16 keys.  You must use 20 or less characters for the label although not all fonts can display 20 characters on the tiny Pebble scrreen.  It's been tested with 64 character keys which should cover all uses!  When adding any keys spaces and known incorrect characters are removed and corrected.  Once the keys have been uploaded they'll be saved on the watch and will only be removed during an upgrade.  But don't worry the keys are also stored in the Pebble phone app and reloaded in the event of an upgrade or factory reset of the watch.  Timezones are also automatically taken care of too.

There's a great guide HERE on how to setup the app to work with your Google account written by Adam Zeis.

Happy two-factoring!