Users will still be able to register via the traditional CB registration form. However, users may also elect to just sign-in using their Twitter credentials. If a Twitter session is not present, the user is redirected to sign into Twitter first. Users that have registered via the traditional CB registration form may elect to link their CB account with their Twitter account, thus being able to one click login in the future.
The plugin is available to all Advanced and Professional membership subscribers and includes detailed documentation.