How to avoid some minutes 'grace' period after having entered your password?
My son has an iPad and enjoys downloading and playing free apps. Problem is that there seems to be a grace period after having entered the password where you can download anything without having to enter the password again. This has cost us a lot of money as it is impossible to choose 'none' under credit card. Don't tell me again to read the instructions on how to enter none under payment method. It is simply NOT an option. I have been trying using all links for several months.
Please instead tell me why there is a 'grace' payment period and how to avoid this. Thanks.
iPad, iOS 5.1.1