BLE (Bluetooth Low Energy) is really interesting. Here's a quick example[1], < 10 lines of javascript, to get your live heart rate per second from a Polar H10 c

BLE (Bluetooth Low Energy) is really interesting. Here's a quick example[1], < 10 lines of javascript, to get your live heart rate per second from a Polar H10 chest strap (tested with Chrome). [1] https://gist.github.com/sbrichardson/6e8ad851311235eee5a63c75003000d3 https://gist.github.com/sbrichardson/6e8ad851311235eee5a63c7...