I use Guided Access in my classroom during centers to make sure students stay in the app that I want them in. The home button no longer works, and you can also mark out certain areas of an app say an ad which when they click that spot it will not work. And all you have to do is Triple click the home button and put in your password to get access back to your iPad. It helps keep their focus. I also use this when I hand my phone, or iPad to a student. Yes I have handed my personal cell phone to students.
It is a setting that came available in iOS6 that I think several people overlook. So you say how do I do this...
I am a wife, mother, and tech geek. I have my masters in Technology Instruction and Integration. I have taught and worked with technology for over 2 decades. I currently work as a Instructional Technology Specialist at Wichita Public Schools in the Magnet office. I present at conferences, and SimpleK12 along with consulting. Contact me for your technology needs at email@example.com.