Daily walks in Paris: a practical analysis of wi-fi access points

Over the past few years, it became much more easy and convenient to associate geographical coordinates to Wi-Fi Access Points (AP). Back in 2002, this activity known as wardriving involved to drive around with a laptop, a GPS receiver, and a PCMCIA wireless card. Nowadays, it may be directly performed on phones as they support Wi-Fi, using external GPS receivers.

[1]  Ling Liu,et al.  What Where Wi: An Analysis of Millions of Wi-Fi Access Points , 2007, 2007 IEEE International Conference on Portable Information Devices.