Probably the most restrictive option Apple has ever offered involves "app locking" a device or what's called guided access use. This feature disables the iOS home button and locks the iPhone or iPad into a single app. Brannon noed that this is an ideal solution for iPads used in kiosk or retail settings. After all, if you're running a restaurant, you don't want someone browsing the web on your digital menu. Similarly, an iPad or iPod touch used as a point-of-sale system is ideally used as a cash register -- not for posting Facebook updates.
I can see this being useful for devices in healthcare settings - either as an information appliance or as an electronic patient information form.
Restrictions in iOS 6 can be used to limit which apps work on an iPhone or iPad.
This feature can be manually enabled via the Accessibility option under Settings>General.
No iMessage and Game Center distractions
Two feature restrictions are the ability to block the use of Apple's iMessage system. iMessage works through the Messages app in iOS and OS X. The secure messaging system functions as a pretty robust and secure alternative to text messaging and can sync entire conversations across a user's devices. Supervised devices can disable iMessage. Similarly, access to Game Center, which also functions across iOS devices and Mountain Lion Macs, can be disabled.
iBooks access and ratings
Apple's iBooks app and iBookstore can now be blocked on iOS devices. Apple has also introduced the option for content rating in the iBookstore. Similar to restrictions already in place for apps, music and video content from the iTunes Store, iBooks can block ebooks with certain content or ratings. To date, Apple has only created a restriction category listed as Erotica. If and when the company will differentiate further isn't clear.
Universal proxy settings
One challenge to implementing iOS devices, particularly in K-12 schools, has been support for proxy servers. Proxy support itself hasn't be the challenge, as iOS already offers it. The problem is that proxy settings up until now have been options set individually for each Wi-Fi network. That means that proxy server configurations in a school of office aren't applied to home or public Wi-Fi networks.