Check this out:
http://cgi.ebay.com/iPod-Nike-Sport-Wireless-Sensor-Silicone-Shoes-Pad_W0QQitemZ300014633357QQihZ020QQcategoryZ48680QQrdZ1QQcmdZViewItem
This has to be the worst way to use the sensor ever. I don't see how you could even run with this in your shoe. Basically it would be the...