[adavies42]

> So, when a friend asks "Hey can I check my email?", you can open Safari, enable this guest mode, and hand the phone to him, no worries.

can you provide a sandboxed environment? he can't have access to any of my persistent Safari data (autofill/bookmarks/history/cookies/dbs/etc.), and any he creates should be wiped, probably on return to the lockscreen. all other forms of app switching (e.g. open a pdf url, then "open in" iBooks/goodReader/whatever) will need to be blocked as well. will also have to block the app tray, the notification center, pop-up/banner notifications, Siri, and possibly the phone. (could experiment with blocking badges and alerts but not sounds, since that only reveals the fact that an email/text/etc. was received, not any specific information about it.) might conceivably need to block all background app network traffic, tho i'm not sure if that's snoopable from inside safari.

basically os x guest mode

[conradev]

That would be the only issue with something like this. The number of system features is finite and they can be disabled each in their own respect, but partitioning a guest from a user's data in an arbitrary application would prove challenging.

[adavies42]

yeah, by the time i got to the end of the list, it was pretty clear how hard it would be to do it right....