I haven't tried this, but I did bookmark it in case I want to some weekend: https://github.com/seemoo-lab/openhaystack https://github.com/seemoo-lab/openhaysta

I haven't tried this, but I did bookmark it in case I want to some weekend: https://github.com/seemoo-lab/openhaystack https://github.com/seemoo-lab/openhaystack "OpenHaystack is a framework for tracking personal Bluetooth devices via Apple's massive Find My network. Use it to create your own tracking tags that you can append to physical objects (keyrings, backpacks, ...) or integrate it into other Bluetooth-capable devices such as notebooks."