Serafin is a full-stack, sub-mW, and versatile RF sensor that brings transparent RF sensing to any mobile and IoT device: it independently conducts the whole RF sensing process from RF signal reception to sensing result computation in a wide variety of sensing tasks with only negligible power consumption.
Details of Serafin can be found in the paper "Bluetooth-Enabled Transparent RF Sensing", which is published in the 31st Annual International Conference On Mobile Computing And Networking (MobiCom 2025).
This is a demo of Serafin.