I just stumbled across chasing-your-tail-ng and wigle.net. I previously didn't know anything like this existed.

Looks like you could run Chasing Your Tail, and log all the WIFI SSIDs that devices (e.g. peoples' cell phones) around you are looking for, then search for the SSIDs on wigle.net, and possibly find the work/school/home locations of the people around you.

Looks like Chasing Your Tail also logs bluetooth, so could be used to find BT beacons that may be in your car, etc. And also SDR for other types of radios. Pretty interesting.

I'm not really familiar with security/OSINT type stuff, but it is interesting. Anybody know of any other projects related to this? What the best ways to mitigate this? I suppose naming your home SSID to a very common SSID would help.