Will Gibson is a Professor of Interactional Sociology and Qualitative Research Methodology at the Institute of Education at University College London, UK. His research concerns interaction and communication in diverse areas of practice, including education and professional contexts. Technology and, increasingly, affect and sensing are central areas of concern in his work.Natalia Ruiz-Junco is an Associate Professor of Sociology at Auburn University, USA. Her research interests include social theory, social interaction, emotions/affect, and sustainability.Dirk vom Lehn is a Professor of Organisation and Practice at King's Business School at King's College London, UK. His research focuses on the analysis of social interaction across various settings, including museums, optometric consultations, dance lessons, and street markets.