In February Team EvilCorp took home the 2nd place at the first Arctic IoT Challenge. With only three days at their disposal three people were able to put together both the hardware and the software required to track actual people based on data "leaking" from mobile phones. Using hobbyist hardware that cost less than $100. The technology required to do so is in no way groundbreaking, it is well known and has many useful applications. The big surprise for the team was how easy it was to abuse seemingly innocent data. With IoT gaining ground, these are things developers need to care about. In this short session we will take a closer look at what we managed to build during a three day hackathon.