update 2009-12-03 – I’ve gotten some attention over this little project, including some time on a local radio station!
In the future I will be putting these devices through their paces, but for now some informal testing (i.e. fun).
In about 40 minutes I collected hundreds of gps/wifi data points using kismet.
So data in hand i had a sinking feeling… Great I have hundreds of data points, what do I *do* with them?
The answer is “gpsmap”, a nifty little app bundled with kismet that has tons of mapping options.
Quick searching revealed an excellent post from the California Soil Research Lab (of all places) that got me started on my way. While I haven’t had much time to tweak the parameters, I have already impressed my geek friends and shocked the less geeky ones when I explain “green = unsecured wireless”.
Here are the commands I found useful:
#interpolated power map gpsmap -S 2 -e -n 1 -t -l ssid -k -p -Q 20 -q 2 -P 30 -z 2 -d 1000,1000 \ -o map1.png Kismet-Sep-03-2006-1.gps #range map gpsmap -e -n 1 -t -l ssid -k -r -R 15 -q 2 -d 1000,1000 \ -o map1.png Kismet-Sep-03-2006-1.gps
So here is what I came up with after 40 minutes of driving and about 10 mintues messing around with gpsmap
This wifi survey was a very spur-of-the-moment thing with very little planning or effort. It makes me really wonder what can be gathered with some additional foresight and planning. Any “wardriving” stories you’d like to share?