No information is provided as to how this works but guessing they are adding radio direction finding to drones – likely to detect Bluetooth, Wi-Fi or cellular signal transmissions – and using that to rapidly identify the location of lost persons – assuming they have a cell phone and it’s on, even if in areas (say mountains) where there is no cellular coverage.

Flyhound | Save lives faster

“Go beyond visual cameras and locate victims at great distance – in challenging environments – using radio signals.”

Coldstreams