Next time I see my cardiologist, I'm going to ask him about remote heart rate monitoring. I'm guessing that the "over the top" way is to insert a pacemaker type apparatus inside the chest wall and have that signal transmit to a receiver.

The other way is to get rid of the strap and then paste on the various electrodes as if you're setting up for an EKG treadmill study. This would entail a brand new setup, not a Polar type thing that riders are accustomed to.

These may appear to be extreme measures and besides many riders believe that power meters that measure wattage gives valuable information. But for the aging baby boomers, the heart is at the heart of their longevity issue. A longer quality of life issue.