He calls it serendipitous broadcasting: 'you don't need to grab a bag filled with stuff. You've got what you need on your belt, in your purse, or in your pocket.'

Apple is prepared for lower sales of what it calls "pocket products:" the iPod shuffle, nano, and classic.

Now if you had told me 28 years ago that I would one day send written messages and make telephone calls around the world from a small box I could fit in my pocket, I would have been skeptical.