This plugin allows you to connect a Microsoft HoloLens device to a Bluetooth LE Heart Rate Monitor.
Uses Bluetooth Generic Attribute Profile Windows Runtime API to interact with a Bluetooth Gatt device (Bluetooth LE) that broadcasts a standard Heart Rate Service. May also work with Windows phones, computers and other UWP devices with Bluetooth LE capabilities.
Tested with Polar H7 and Zephyr HxM Smart Heart Rate Monitors and HoloLens.
Get the demo app for HoloLens, here: https://www.microsoft.com/en-us/store/p/heart-rate-monitor/9ngxh1xqbkpp