It would be nice to see your heart rate in the system tray along with other metrics. I couldn't find an add-on and would like to develop one. I have a Garmin ANT USB receiver to test and see if it would work. Do any of you know where i should start?
You could create a custom sensor for HWiNFO that would expose the heart rate and then treat it in HWiNFO as any other sensor: https://www.hwinfo.com/forum/threads/custom-user-sensors-in-hwinfo.5817/
You just need to develop a method of exporting the data into registry in required format as specified above.