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In this paper we present how we applied and analyzed multimodality in design of tangible communication systems for elderly. First we define six categories of multimodality (aural, visual, tactile, gesture, posture, and space), which we integrate in our design processes and design artifacts. We illustrate how user interaction has been established, especially when multimodality is central to our approach. We also discuss multimodal design in context of user experiences, user-centered design, and participatory design approaches. We show the added value and change of focus through multimodality in design processes. We analyze our findings before we conclude our paper.

A poor nutritional state, as is the case for many people today, can increase risks for cancer, cardiovascular disease and obesity. Technology supported approaches could potentially be used to positively influence food consumption. We present the Nutriflect system, which utilizes users' shopping data to inform them about their long term shopping behavior. In an initial study we conducted structured interviews in grocery stores. Based on the results we implemented a system that visualized a household's collective shopping information via situated displays. The aim was to raise awareness about shopping habits and to enable reflection about nutrition without burdening the users with the manual entry of their eating habits. We evaluated the system in a 4 week field study in 8 households with 21 users. The results indicate that contextually situated displays, showing shopping patterns against personal nutrition goals, can foster a reflective and respectful approach towards better shopping and nutrition.

The rise of modern smartphones brought gesture-based interaction to our daily lives. As the number of different operating systems and graphical user interfaces increases, designers and researchers can benefit from a common notation for mobile interaction design. In this paper, we present a concept of an extensible sketching notation for mobile gestures. The proposed notation, Monox, provides a common basis for collaborative design and analysis of mobile interactions. Monox is platform independent and enables general discussions and negotiations on topics of mobile gestures. An extensive evaluation showed the practicability and ability of Monox to serve as a common denominator for discussion and communication within interdisciplinary groups of researchers, designers and developers.

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