No abstract

Figure 1. Self-adjusted wearable BuSiNec displaying one's subjective feeling of being busy on a three-level basis following the traffic light metaphor.

No abstract

While gamification is an often used tool in building interactive experiences for sports, little work has addressed systems designed by users for users and deeply embedded in the social setting of physical exercise. Consequently, a better understanding of sports gamification in the wild is needed to build systems that reflect the users' pre-existing social context. This paper presents a qualitative study of a gamification system, the Boar Board, designed by a sports coach to support users participating in regular exercises. Through surveys, interviews and observations over eight months, we built an understanding of the user adoption of the system and how the Boar Board supported the goals of the group. Based on this, we endeavour to understand the social aspects of the system, including trust, and posit a number of design considerations for future inquiry into gamification systems for sports.

Though many new technologies have been adopted for stress detection, communicating stress to the users is still experienced primarily through visual or auditory channels. However, these commonly used feedback channels are already associated with smartphone notifications. Instead, we focus on thermal feedback yielding the advantage to preserve privacy due to its unobtrusiveness. By this work, we contribute an investigation of thermal feedback for notifying users about stress comprising the exploration of the preferred temperature level, rate of change, and body location. Accordingly, we compared different stimuli for each for those in a user study involving 21 participants. From their quantitative and qualitative feedback, we found that cold stimuli are preferred in general, showing that ± − 0.5 • C is the optimal rate of change and preferably when presented at the lower back. We conclude with discussing our findings from both the quantitative and qualitative data and finally present our research agenda paving the way for thermal feedback as a stress notifier. CCS CONCEPTS • Human-centered computing → HCI design and evaluation methods.