I was browsing some apps in the App Store and I accidentally clicked buy on a paid app. It went ahead and purchased the app without even asking for my password. I have no idea why this happened, but this behavior is completely unacceptable to me. Is there any way I can fix this? I remember reading somewhere that App Store will not ask for a password if you entered it within the last fifteen minutes. Is this true? If so I think it applies to my case, because my incident took place just a few minutes after I entered my password for a different purchase. In any case, I'd really like to know how to prevent this behavior in future. Thanks very much in advance to anybody who can help me out. Cheers!