projects > why-fi


I created this open source project to show how easy it is to track people’s movements without their consent using their own smartphones.

It works because, the constant search for a Wi-Fi turn our phones into beacons signaling where we are, who we are and even where we have been. With that, it’s possible to create a map of people’s movements by collecting data in large scale.

Despite looking like a complex endeavour, doing something like this is fairly simple, so I created an open source version of such tracking system to show that any big or small organization (a shopping center, for instance) can track us and, with this, bring awareness to this issue.

I have presented this work at the Mozilla Festival, in London, in 2019.

The entire project can be found at