Research for Design of Playful Mobile Services for Social Experiences between Nearby Strangers

Having positive interpersonal interactions is a fundamental human need and source of well-being. While fulfilling this need is usually associated with strong ties, research has shown that meaningful social experiences are not limited to those. This research explores the largely untapped social potential of nearby strangers and ways that mobile services can be designed to take advantage of these social opportunities. Play and playfulness appear to be particularly worthwhile ways to achieve this end: play is meaningful in itself (i.e., does not require an external goal) and takes place outside the context of real life. In addition, playful design tends to make digital services more engaging. This research focuses on playfulness as a design quality and explores the social implications of playful mobile services for nearby strangers.

This doctoral thesis asks two research questions: What kind of social experiences emerge between nearby strangers from the use of playful mobile services? How can playful mobile services be designed to encourage social experiences between nearby strangers? The research contributes to the field of human-computer interaction and provides insights into mobile service design through six research articles. Two of the studies charted expected experiences with early-stage mobile application concepts for playful interaction between nearby strangers. One of these concepts was further developed into a fully functional mobile application, and a large-scale, in-the-wild study was arranged to explore the actual social experiences it generated. Two of the studies investigated social experiences between nearby strangers in the context of commercial mobile games. The sixth study explored the design space of playful interactions between nearby strangers through co-design workshops.

The playful mobile services investigated in this research were found to induce various behaviors that resulted in social experiences between nearby strangers. Examples of such behaviors are the active exploration of the outside world, community building, communicating and collaborating with strangers, and interacting in crowds. I found that playful and social experiences such as competition, surprise, curiosity, inspiration, and benevolence motivated individuals to use these services.