There is a reason small children should not be near electronics unsupervised!!!
My MIL has an iPad that she uses regularly. She has tons of games downloaded on it for all the kids to use while they are visiting. She signed up to get daily emails with Free Apps, and they occasionally go through this together and download some of them. Everytime they downloaded one, she had to enter her password, and never gave this password to the kids. What she didn't realize was that the kids could buy credits in game AFTER she had entered in her password. Silly her, her credit card was on file at iTunes. But there is a link in the game where my nephew 6 was playing 'Buy 6000 Fish bucks for $149.99'. Well, he did this a bunch of times and spent over $500. She didn't know about it until he showed her today, "Nanna, look, I can buy Fish Bucks without spending money!!!"Now, she wants sil to foot the bill. My kid plays those free games and always harrasses me to buy the in game coins for her. She tries, but guess what pops up!!! PASSWORD for my iTunes account and she does not know it. And I mean my kid plays all them free games, zoo, sea, city, zombie, you name it. These are most likely parents that give their kids their passwords and now they want to blame someone else...or even apple. Correct me if i'm wrong and someone knows of any apps that are free and you can just click buy coins and its done. When I'm finish installing a new free app for my kid, I RESTART the ipad so the password is not saved for how ever many minutes it is.