is an app
How do we determine what our WiFi landscape looks like? One way is to create an LED rod that turns more light on, the stronger the WiFi signal is, then walk around and take extended exposure shots. Timo has done just that. More here on his page. Video Source Page Here.
The image above is from her site, lacking larger images, she does however accompany them with music. Click here for another link to some larger images from Tatiana on Behance.