The Toddler App
If your child likes to play with your iPhone but doesn’t quite understand what the Home button does, the B-lock Case (iPhone 4 and 4S; $15) was designed with your needs in mind.
The case features a special snap-on guard that covers the bottom part of the face of the phone, thus keeping busy fingers away from the danger zone we parents call the Home button. The case comes in white or black, and additional covers are available for $8 for a pack of three.
http://www.macworld.com/article/2022708/article.html
