This actually is a not strictly speaking a research or technical post. However I cannot resist putting it up. Ralph Borland made an installation for my wall in my house. It is a gigantic map of the wifi hotspots in Johannesburg and Capetown. He queried the WiGLE database to generate the map. It is based on a piece of work he did previously – found here.
The image is so big it is hard to capture. The blue is Capetown and the red Johannesburg. I have also included a picture of Ralph signing the piece.