Use Your iPhone To Monitor Your Exercise Heart Rate Using 60beat
December 10th, 2010 link to (permalink)
If you need to monitor your heart rate during your workouts, 60beat is a neat little gadget that can help you. Its simply connects to your iPhone via the 3.5mm headphone jack and then is able to collect any signals being sent from a 5Khz or Polar compatible heart rate monitor chest strap.
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