Always On: How the iPhone Unlocked the Anything-Anytime-Anywhere Future--and Locked Us In

Even Steve Jobs didn't know what he had on his hands when he announced the original iPhone as a combination of a mere "three revolutionary products"--an iPod, a cell phone, and a keyboard-less handheld computer. Once Apple introduced the App Store and opened it up to outside developers, however, the iPhone became capable of serving a rapidly growing number of functions--now more than 200,000 and counting.

But the iPhone has implications far beyond the phone or gadget market. In fact, it's op...