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Finger touch and mouse-based interaction are today's predominant modalities to interact with screen-based user interfaces. Related work suggests that new techniques interweaving pre-touch sensing and touch are useful future alternatives. In this paper, we introduce Fich, a novel pre-touch technique that augments conventional touch interfaces with tooltips and further "fingerover" effects, opening up the space in front of the screen for user interaction. To study Fich in-depth, we developed a Fich-enabled weather application and compared user experience and interface discovery ("serendipity") of Fich against the traditional input modalities Mouse and finger Touch in a user study with 42 subjects. We report on the results, implying Fich's user experience to be rated significantly higher in terms of hedonic quality and significantly lower in terms of pragmatic quality, as compared to traditional input modalities. CCS CONCEPTS • Human-centered computing → Interaction techniques.

The number of commuters has been increasing for many years and the negative effects on wellbeing are therefore affecting more and more people. Following a user centered design process that focuses on known wellbeing determinants, such as relatedness and empathy, we developed the Honeypot socializing app. The app allows commuters to find other travelers to chat with and meet in person to enhance their wellbeing through fostering meaningful and contextual social interactions. First, we describe the development of the idea and the design of the app. Then, we report on a field study with 16 participants, which we carried out on trains. The study results show that the app helps to get in contact with fellow travelers and that it has the potential to promote the wellbeing of commuters in the long term.

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