[runjake]

This is why I think someone should market a cheap SIGINT tool that collects BT/BTLE/Wi-Fi data from nearby devices.

I've got this setup running on a Raspberry Pi near my front door and it collects all sorts of useful data, even from people walking by on the sidewalk, 30 feet and two walls away.

At some point, I'd love to explore vehicle emissions more, too.

[mar_buffalo]

I've worked on something to do this, it' not perfect. It listens for 24 hours, learns what is 'normal'. Calibrates strength of signal (dogwalker on sidewalk, ignore) getting closer than that, between 10pm and 5am, turn on a light or two. Not meaning to spam, but it's at wispyalert.com . Any thoughts, I'd be interested to hear.

[beagle3]

Modern OSes randomize WiFi MAC addresses unless you ask them not to, and also do some randomization on BT MAC address.

[ghostly_s]

No prosecutor is going to waste their time trying to convict someone based on metadata. Even video is often insufficient for a conviction.

[Terretta]

Funny enough a router collecting this data near a busy enough highway can bog itself down by collecting unique Wi-Fi identifiers from all the passing cars' networks, not to mention all the hotspots on passing commuter trains.

It never occurs to router makers a static base could see a million Wi-Fi networks come and go every week.

[Geezus_42]

So the radio equivalent of Flock cameras...

[lazide]

Always has been. Google got sued for doing it over a decade ago with street view cars.

That is why they need WiFi info for ‘fine location’.

[naturalmovement]

Uh hello police department?

I have MAC addresses!

M-A-C...

Yes, I sniff them out the air with equipment I built!

Uh no I'm not on drugs why do you ask?