Elwys has collected data of various interactional activities, such as grocery shopping, driving lessons, guided tours, encounters between unacquainted people, and many others. He examines how bodily resources are used in social interaction in concomitance with talk and is particularly interested in mobile activities. Through his research, he accumulated extensive expertise in fieldwork and data collection. Elwys is a full professor of Romance linguistics at the University of Heidelberg, Germany, with a focus on CA/IL studies of French and Italian talk-in-interaction. He is currently an associate editor of Research on Language and Social Interaction.