Multiple Remembered Accounts

[Sploder12]

Is your feature based on a frustration?
With the popularity of Alt accounts it would be a nice addition to have multiple remembered accounts so you didn't have to enter your password every time.

If so, Describe the solution you'd like
Extend on the "Continue as" feature that already exists.

And, Describe alternatives you've considered
Rework the entire alt account system to be connected to the main account and can be easily accessed with the "switch user" feature.

** Images **
Something like this, but I'm bad at UI design so take it with an excessively large grain of salt.

[Zageron]

If we do this, we should probably add a PIN as well. (Not any kind of actually secure pin, but like a locally encrypted pin just in case two people are sharing the machine.)