Feature Request: Allow secondary easier methods to log in, such as a PIN

[ddotthomas]

I was thinking about how in the past I've seen people ask if there was any ways to enable a PIN log-in for Linux and I think it would help make the desktop even easier for people to use.

I would probably limit it to just being used to log in and unlock any sessions already logged in. It would probably still be better if anything that requires root or 'sudo' still needs an admin password to fully authenticate.

Edit: I'm not sure if this applies only to comisc-greeter or if it will have to be implemented elsewhere.