Re: Corrona App - Whats the rest of the story ?
they are sending the TSSI in the contact packet, and recording the RSSI on the recieve end.
if you know what the sending and reciving devices are, with both of those you can work out the distance.
its not exact science, environmental variables, but its better than trying to work out Time of flight.
theres a lot of work gone on into the idea recently, and signal loss is a pretty reliable measure of distance.