How does Nike+ work?
Sparkfun did a teardown of the Nike+ module here.

The Nike+ shoe dongle uses a nRF2402 RFIC and a PIC 16F688.

The receiver uses a nRF2401A and a ASIC.

And yes, sparkfun sells a USB &lt;-> Nike+ receiver here.



I've basically scraped all this info from Sparkfun. Thanks, Sparkfun!