Eddystone

Eddystone is an open Bluetooth Low Energy beacon format from Google that defines a set of frame types for broadcasting structured data to nearby devices. It was designed to be simple for hardware makers to implement and flexible for applications to consume in mobile platforms and the web. The standard includes unique identifier frames for asset tracking, telemetry frames for device health and battery, and a URL frame that points scanners directly to web content. A rotating, ephemeral identifier variant supports privacy-preserving deployments where beacons regularly change their broadcast identity. Reference code and documentation show how to craft frames, configure advertising intervals, and interpret signals on the receiver side. Eddystone helped catalyze “physical web” style experiences by making proximity signals easy to deploy and consume across ecosystems.