Each onboard ADS-B set consists of a Global Positioning System satellite navigation unit, two Pentium microprocessors, some software and a radio transmitter-receiver--not much more gear than you would find behind the dash of a new Cadillac.

FORBES: Free flight

And if Apple jams a Wi-Fi receiver into the device the new software could allow the iPod to include the ability to browse the Web and send and receive e-mail.

FORBES: The Next iPod

The software puts up an alert bubble whenever the PC is started without the receiver attached, and there's no way to turn this off.

ENGADGET: Switched On: More options for getting from scribble to screen