Yes, this is serious! Ok, here goes, the Product Description: Grab your iPod nano, iPod touch or iPhone 3GS, a pair of Nike shoes, and the Nike iPod Sport Kit or Sensor. Put the sensor in your Nike shoe, there's a built-in pocket specifically designed for it under the insole. Then connect the receiver to your iPod nano. iPod touch includes built-in support for Nike, so no receiver is necessary. The sensor tracks your run, then sends the data to your iPod.
Apple Nike and iPod Sport Kit
