Eddystone is Google's new open Bluetooth Low Energy beacon standard

Google has announced its new open Bluetooth Low Energy beacon standard, Eddystone. With this, developers will have easy access to relative context and precise location, and users will be able to benefit in many ways. With ease of use and security in mind, Google has built in a feature called Ephemeral Identifiers (EIDs), which enable you to securely do things like find your luggage or keys. These EIDs change frequently, and only allow authorized clients to decode them.