OpenHaystack is a framework that allows you to track personal Bluetooth devices through Apple’s Find My network. By creating your tracking tags, you can monitor physical objects without the need for cellular coverage. The system involves a clever combination of Bluetooth advertisements, public-key cryptography, and a central database. OpenHaystack allows for the deployment of firmwares on various devices, with a focus on security and privacy. A mobile version of the app is available, which requires a proxy server hosted on Mac hardware. The project has received significant press and media coverage, highlighting its innovative approach to Bluetooth tracking. Remember, this software is experimental and should be used with caution.
https://github.com/seemoo-lab/openhaystack