There are so many wifi signals around us as we walk the city streets today. Wifi hotspots, home wifi, company wifi, personal wifi hotspots. You can even turn a mobilephone into a wifi hotspot. There are so many wireless signals surround us, it is just not visible to our naked eyes, But check this wifi measuring rod by some Norwegian students… here is a video
Immaterials: Light painting WiFi from Timo on Vimeo from http://yourban.no/2011/02/22/immaterials-light-painting-wifi/ … really amazing stuff! So many mobile signals and wifi’s around us, it is like a invisible wireless terrain!.