If we do not want to be developers who work on the developement of such a device 24 * 7 for an infinite time: We can use a training tracker: https://github.com/rainerblind/ by Dr. Ing. Rainer Blind: https://www.linkedin.com/in/rainer-blind-a46207272/?originalSubdomain=de It is easy to pair a foot pod but also an ANT+ or a BLE heart rate monitor …