This means signing in opportunistically, namely upon trying to access the My Storis list, or publishing a Stori. The (possible) exception to this is the OOBE, requiring getting a Google ID for building the directory structure correctly.
A later enhancement to allow non-signin OOBE is to create a temporary account id, which allows saving to the local file system, and is updated once signin occurs.
This means signing in opportunistically, namely upon trying to access the My Storis list, or publishing a Stori. The (possible) exception to this is the OOBE, requiring getting a Google ID for building the directory structure correctly.
A later enhancement to allow non-signin OOBE is to create a temporary account id, which allows saving to the local file system, and is updated once signin occurs.