So I did a hard reset of my phone and gave it to my friend. She setup the phone using her iCloud ID but apparently the Passbook repopulated using my information. How is this a thing?! I just spoke to an Apple rep and they said that the "Erase All Content and Settings" function only wipes my content, NOT my account settings. This is news to me. So apparently I have to sign out of iCloud (rather than simply turning of Find My iPhone) AND sign out of iTunes & App Store before doing a hard reset. This is absolutely ludicrous and I've never had this happen before in any phones that I've reset and given to others. Can someone shed some light on this? I don't think the rep knows what they're talking about.