Christian started experimenting with the possibilities that emerging digital and social media platforms were offering at the early beginnings of Facebook, YouTube, Twitter, and Co.

For example, he invented ‚Pay with a Tweet‘, the first social media payment system where people pay with the value of their social network, and ‚#Get The Mayor‘, a world’s-first social media-led citizen engagement platform for the City of Heidelberg that lets all citizens get involved in helping shape the future of their city.