You need either a moving magnet or a moving piece of metal, like, say, a laptop harddisk platter. I can't find a link anymore, but some years ago the German railways had some premium seating, where the magnet to keep the tray in front of you upright was located in the tray itself, not in the front seat. People using their laptops on the train were having mysterious harddisk failures...

fscklog, one of the better German Apple-themed blogs, says in http://www.fscklog.com/2008/05/intel-stellt-an.html that the article on ZDNet misrepresents what was being said: i.e., that Intel hopes to have manufacturers of mobile internet-type device thingies (like the iPhone) use the Atom processor. Fscklog claims they contacted Intel spokesman Mike Cato and got that clarification.