Michiel de Lange is an assistant professor in new media studies at Utrecht University’s Department of Media and Culture Studies. He obtained a PhD in Philosophy (2010) from the Erasmus University Rotterdam, and works as a researcher and lecturer in the field of (mobile) media, urban culture, identity and play. He is the co-founder of The Mobile City, a platform for the study of new media and urbanism, and the [urban interfaces] research group at Utrecht University. Martijn de Waal is a lector at the Lectorate of Play & Civic Media at the Amsterdam University of Applied Sciences. He holds a PhD from the University of Groningen (2012) and is an internationally renowned scholar in the field of urban media, place making and citizen empowerment. His book ‘The City as Interface: How Digital Media are Changing the City’ has been internationally well received, and he is regularly invited as a keynote speaker at both academic and professional conferences around the world.