I just started out writing some software for a cool device, it's a Suunto Team POD that connects to up to 30 heart rate chest belts wirelessly, and allows you to collect heart rates from all of the belts simultaneously in real time, using a SDK. The hardware comes with some standard Suunto software that I used on my Vista machine to check that it was all working ok, and indeed it was:

The device hooks up using a USB cable, and Suunto provides a USB Serial Driver, that makes it show up as a COM port.

Happy that the ...