[aboodman]

In a perfect world, you don't login at all because your device knows your identity and there are standardized identity federation protocols that applications and devices can participate in.

(Android already has this. Android developers: Please use AccountManager. I am highly unlikely to create an account with you.)

I can't count the number of times I've just "oh well, nevermind" when I couldn't remember the stupid credentials I used with some application, or couldn't be bothered to create new ones. Not to mention the well-documented security problems with asking users to manage passwords.

Blech I say. Blech. I'm sad that it's 2014 and this is still unsolved.