(http://i.imgur.com/V81iD.png)
If there's one feature that is commonplace on desktop operating systems that is missing from all the major mobile OS's including Android it's support for multiple users on one device. But a discovery by XDA forum member Zanderman112 among others shows that the latest version of Android, version 4.1 Jelly Bean actually has the nuts and bolts of 'multiple User Accounts' (MUA) already built in! Apparently the feature is not complete...but appears to be in the works and very well could appear on future versions of the OS or even an upgrade to Jelly Bean.
Now on a phone it could be argued that multiple users might be an unnecessary feature since our phones are typically used by just one person but what about tablets? A tablet is often shared by numerous people in a household...between couples, parents and children or between siblings or work associates. Wouldn't it be great if you could 'log in' to an individual account that held your own personal settings, bookmarks and downloads as well as kept private items like emails and files separate from other 'users' of the same device? There a whole list of possible benefits of this that I can think of for this functionality.
Now apparently 'miles of code' dating back as far as 2011 exists in the OS already for 'MUA'. Is this something you'd like to see on the Nexus 7? Tell us how you might use multiple user accounts on your tablet in your own household if it became a new feature you could use.
(http://i.imgur.com/EeEgs.jpg)
AndroidPolice (http://www.androidpolice.com/2012/07/30/multiple-user-accounts-are-coming-miles-of-code-is-already-in-aosp-and-some-of-it-is-quietly-working-on-devices-right-now/)