Since the first event in 2004, t2 has released annual pre-conference challenges for the attendees, people interested in showcasing their skills or gaining free attendance to the event. In this video from 2016 Ludvig Strigeus and Timo Hirvonen walk through the challenge and show how it’s all done.

Even if you are not into solving challenges you can learn how Ludde created a complete taxi meter application with built-in casino games!