cmuSKY: This display shows all wireless users currently connected to Wireless Andrew on the CMU campus. (Realtime, using Flash.)
Tags: computers, maps, security
Current Music: The Conet Project -- English Man Version 1 ♬
So while it might be a neat effect, I seem to be missing something: How do they determine the actual positioning?
Last I checked AP's didn't bother with signals from a host that wasn't associated to it, thus limiting the triangulation opportunities.
And that they'd have to have a whole mess of AP's to maintain any sort of accuracy just from an association history (as well as take a fair amount of thinking to get everything correlated.)
It looks like they just clustered some dots around the access points with some randomization thrown in for visibility.