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Gregor Broll, Henri Palleis, Hendrik Richter, Alexander Wiethoff
Exploring Multimodal Feedback for an NFC-based Mobile Shopping Assistant
In Proceedings of the 5th International Research Workshop with focus on Near Field Communication (NFC 2013), Zurich, Switzerland, February 05, 2013

This paper explores how mobile devices can provide useful multimodal feedback during interactions with NFC-tagged objects. We exemplify our approach with a mobile shopping assistant that uses haptic-visual and audio-haptic feedback to inform diabetics about the agreeability of tagged grocery products. A preliminary laboratory study shows a preference for haptic-visual feedback which is regarded as more helpful, easier to learn and more pleasant to use. The results stress the usefulness of multimodal feedback for mobile interactions with NFC-tagged objects in this context and inform future work, e.g. about the expressiveness of different feedback modalities and patterns.