I lock my iPad so that my son doesn't play games for hours on it. When i am not around, he starts playing games. So I started locking it. For 2 days I knew he didn't play. But on the third day, when I was back from work I saw him using the iPad. I thought he must have guessed the passcode, so I changed the passcode again. After a week I saw him using the iPad. When I asked my son how he unlocked the iPad, he said he found the iPad unlocked. So I googled and found out that an iPad can be unlocked by connecting to iMac. Unlike me, my son is Mac savvy. I don't suspect my son but he could have have used the iMac to unlock the iPad. My question is: Is it possible to lock the iPad so that it cannot be unlocked by any method other than typing the passcode?