Can anyone expand on this support article for me please? http://support.apple.com/kb/ht4175 I assume the data protection feature is something more than just preventing casual access to the device through a password. However, the support article does not explain it (to me at least) in sufficient detail. I feel these sentences need more explanation: "Data protection enhances the built-in hardware encryption by protecting the hardware encryption keys with your passcode. This provides an additional layer of protection for your email messages attachments, and third-party applications."