2) Either the browser demands an unlock password every single time it queries the password store--which is probably not an acceptable experience for most users--or the browser can arbitrarily read the password store when left unattended. There's no meaningful middle ground here. An option to demand a credential before unlocking the store might be nice for nerds, but nerds don't need it anyway, because they can use 1Password (or similar) to do this for them. It's simply not tenable for normals. Good grief, just look at the wailing and moaning that the UAC prompts in Windows Vista generated. Those prompts by default didn't even demand credentials, just a click through.