[ancientworldnow]

It requires root, but Cryptfs (available in the play store and f-droid) enables just such a feature. In fact, it's written by this blog post's author.

http://nelenkov.blogspot.com/2012/08/changing-androids-disk-...

https://play.google.com/store/apps/details?id=org.nick.crypt...

[JshWright]

> It requires root

And there's the problem... I'm trading one security improvement for a whole host of other issues...

[ancientworldnow]

That's a valid concern, though you can root, install and run the app, and then unroot. It's not a good solution, but it is a solution until Android L builds in the ability to use different passwords.

[icebraining]

Which issues?