Immaterials: Light painting WiFi

This project explores the invisible terrain of WiFi networks in urban spaces by light painting signal strength in long-exposure photographs.
A four-metre long measuring rod with 80 points of light reveals cross-sections through WiFi networks using a photographic technique called light-painting.
More here:
nearfield.org/​2011/​02/​wifi-light-painting
yourban.no/​2011/​02/​22/​immaterials-light-painting-wifi/​
Photos:
flickr.com/​photos/​timo/​sets/​72157626020532597/​