iPhone Snaps and Saves a Recoverable Screengrab With Every Home Button Press

So said Jonathan Zdziarski in his O'Reilly webcast today, in which he also demoed a way around the iPhone passcode lock, as promised. To achieve that zoomy minimizing effect every time you press the home button (i.e., every time you finish reading your text messages, emails, web history, contacts—think how many times you press that button), the system takes a full-screen grab and caches it. Which, if you're up to some naughtiness (or your phone gets stolen), isn't something you necessarily want to happen.

http://gizmodo.com/5048711/iphone-sn...e-button-press