This reminds me of a similar (but visual) project done several years ago, called "Light Painting WiFi" [0], which has popped on HN more than once, most recently

This reminds me of a similar (but visual) project done several years ago, called "Light Painting WiFi" [0], which has popped on HN more than once, most recently in April [1]. Are there any city-wide (or larger) WiFi maps available anywhere? We well know that Google and several other companies have been collecting WAP data en masse for many years, but I don't think I've ever seen much done with the data publicly aside from a handful of this sort of small-scale art project. Are the data considered too valuable or too controversial by the collectors (cartographers?) to publish openly? 0. http://www.nearfield.org/2011/02/wifi-light-painting http://www.nearfield.org/2011/02/wifi-light-painting 1. https://news.ycombinator.com/item?id=7581253 https://news.ycombinator.com/item?id=7581253