Guided Access is a handy feature in iOS 6 that lets you lock your child into a single app by disabling the hardware buttons on a device. It prevents your child from going hog wild through your iPhone or iPad when you hand it to them for some play time. Guided Access is great until it locks up and you can't exit from this mode.
In general, iOS devices don't freeze very often, but some unknown glitch causes Guided Access to lock up occasionally. When this happens, you are stuck in the kids app and can't get back to the home screen. I've had it happen with enough frequency that I've bookmarked this handy tip from OS X Daily tha
