We didn't get a ton of details on this one during the keynote, but Apple has announced a new Guided Access feature for iOS that promises to let folks limit what sort of input their devices are able to respond to. Some examples given by Apple are a parent of an autistic child who could disable on-screen controls so they don't accidentally exit an app, a teacher who could prevent students from exiting a test app, or museums who could keep folks locked in to their own display apps. Gallery: Guided Access for iOS 6
