Hi, Everyone. I am new to all apple products. Just got my IPad air and mucked around a bit. One problem keeps bugging me is that after a while not installing anything, if I want to install an app from app store, there'll come up a window asking me to type in ITunes store passcode. I know this is for security's good in case you have your credit card registered, but I didn't put in my credit information, I don't want to type in passcode every time, how can I remove that? FYI, I don't have restrictions enabled, on iTunes & App Store setting, I have my appled ID on the top, and I tried to sign out and sign in again, tried reboot. Thank you very much for your kind help.