Explore the experimental Web Bluetooth API and build a functional mobile bike computer in this JSConf Iceland 2016 talk. Dive into the BLE protocol, connect to Bluetooth Smart sensors for real-time heart rate, speed, and pedaling cadence metrics. Learn about Functional Reactive Programming using cycle.js to transform sensor data into observable streams. Discover the potential of hardware-accessing, offline-accessible web apps while enjoying some bike-related humor along the way.