Participatory Design is about the direct involvement of people in the co-design of the technologies they use. Embracing a diverse collection of principles and practices aimed at making technologies, tools, environments, businesses, and social institutions more responsive to human needs, this is a state-of-the-art reference handbook for the subject. The Routledge International Handbook of Participatory Design brings together a multidisciplinary and international group of experts to discuss the pivotal issues in participatory design.