A surprising amount of information can be intercepted by listening to raw 802.11 WiFi signals. WiFi devices are continuously broadcasting information that can be use to track people's movements and even to infer things like when wireless security cameras have detected motion. And this data can be intercepted from blocks away, without even being connected to any WiFi network. Come learn about some of the techniques that are almost certainly already being used by governments and corporations to track us all, and what can be done to help prevent it... or how to do it yourself, if you are so inclined... for non-malicious purposes only, of course. I'll also be presenting a new tool I've developed to help.