I'm doing this, but for pets. https://ppn.gethuan.com/ https://ppn.gethuan.com/. There's no need to reverse engineer anything - it's using standard BLE and iBe

I'm doing this, but for pets. https://ppn.gethuan.com/ https://ppn.gethuan.com/. There's no need to reverse engineer anything - it's using standard BLE and iBeacon, and you can buy ready-made tags and program them however you like from Alibaba suppliers.