My Polar CS200 bicycle computer is one of the few standalone gizmos my iPhone hasn't replaced yet. Hooked up wirelessly to sensors on my bike and a chest strap, the CS200 gives me data on speed, cadence, distance, pace, and heart rate during my daily rides. My current bike computer gets the job done, but I've often wished for a fuller-featured solution, especially since Polar's computers aren't able to sync with Macs without using third-party software, some of which is pretty expensive.
Patently Apple has just discovered a 2009 Apple patent which would turn an iPhone or