OpenHaystack is a software framework for creating and tracking custom Bluetooth beacons using the Apple Find My crowdsourced location network. It provides a system for generating encrypted cryptographic keys and flashing firmware onto embedded hardware to broadcast trackable Bluetooth signals.
The project enables the retrieval and decryption of geographic coordinates for remote hardware using private keys to recover device movement history. It also includes a location proxy that fetches network reports from the Apple ecosystem and serves that data to remote applications.
The toolset covers cryptographic identity management, firmware deployment via USB, and the visualization of device locations on a map. It further provides capabilities for extracting private advertisement keys to decrypt associated location data.
