Ylva Fernaeus is a researcher at SICS and the Mobile Life Centre and lecturer at KTH and works in the areas of human-machine interaction, with special interest in casual, mobile and physical interaction. Her PhD work focused on creative, bodily and social forms of computer programming with children.

Jussi Holopainen is a principal researcher in the User Experience and Design team at Nokia Research Center, Tampere, Finland. His previous research has focused on the patterns approach to game design and the role and nature of playfulness in product, application, and service design.

Tilde Bekker is an assistant professor at the Faculty of Industrial Design, Eindhoven University of Technology. She is the manager of the Playful Interactions theme that arranges design projects for bachelor and master students. Her research interests include designing intelligent playful solutions for children and older adults and persuasive design.