Despite technological improvements in commercial activity trackers, little attention has been given to their emotional, social, or fashion-related qualities, such as their visual aesthetics and their relationship to self-expression and social connection. As an alternative integrated approach incorporating HCI, fashion, and product design, our project made use of the characteristics of patina to improve activity trackers as fashionable wearables. We developed the Patina Engraving System, which engraves patina-like patterns on an activity tracker according to a user's activity logs. Using a piercing technique, the patina of activity logs has been made abstract, visually rich, gradually emerging, and historically accumulated. During the field trial, we found that the patina motivated the participants to increase exercises for engraving aesthetic patinas. A tracker with patina triggered spontaneous social interactions in face-toface situations. The participants also cherished the trackers that held their own history. Based on the field trial, we discuss design implications for utilizing patina in designing future fashionable technologies.

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This paper explains the process of developing a scenario involving the use of a robotic platform to enhance the work experience of disabled employees. We outline the challenges involved in revealing the potential unintended consequences of introducing elements of Artificial Intelligence, automation, and robotics into a socially and ethically complex and potentially fragile scenario, and the practical challenges involved in giving a voice to vulnerable users throughout the design process. While an ideal case scenario would involve the disabled employees as much as possible directly in the design process, this can, realistically, be a challenge. In this paper, we detail a methodological and analytic approach that is centered around ethnography and design fictions. It is designed to provide a deeper understanding of all the stakeholders involved in the scenario while encouraging ethical reflection. Based on our findings, we argue that, while it is relatively easy to adopt an a priori ethical stance through notions such as inclusivity and accessibility, there are risks involved in making such a priori prescriptions with respect to the perspectives of different stakeholders in an applied research project. More specifically, we highlight the importance of understanding the broad organizational and bureaucratic characteristics of a business or workplace when devising HRI scenarios and tasks, and of considering elements such as business models, operating philosophy, and organizational hierarchies in the design process.

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