dmchurch/authenticator

Google Two-Step Authenticator for Pebble

Authenticator

This is Authenticator for Pebble, a self-contained watch app for Pebble SDK 2.0, generating multiple Time-based One-Time Passwords, much like Google Authenticator. It uses the phone for a configuration UI and long-term configuration storage across upgrades, but the watch can continue to generate passwords without a connection to the phone after the initial configuration is set.

To use, install the pbw, then go to "Watch Apps" in the Pebble app and tap the configuration icon next to Authenticator to enter your account/secret information.

The watch retrieves UTC offset (time zone) information from the phone during configuration, as the Pebble does not natively support time zones.

If the app is started after not having been used for at least an hour and there is a connection to the phone, it will ask for updated time zone information. In addition, pressing and holding the select button will tell the watch to immediately refresh the configuration and timezone information.

NOTE that this assumes that your phone's time and time zone are set correctly! This should not be an issue if you are getting network time, but if you are travelling somewhere without network service and you update your phone's clock, you must also inform it of the new timezone or it will generate incorrect passwords.

Credits

pokey9000: Initial implementation, called 'twostep' IEF: Support for multiple tokens and labels, new user interface rigel314: optimizations and changing timezone support Danielle Church: SDK 2.0 support, JS configuration, on-watch storage