Heuristics for NUI Revisited and Put into Practice
Natural User Interfaces (NUIs) represent a strong tendency for interaction with new computational technologies. They also represent a big challenge for designers, since delivering the promised feelings of naturalness is not trivial. In this paper, we revisit a set of 23 heuristics for NUI applications within the context of three experiments to evaluate the design of two scenarios of using NUI as assistive technology systems. While using the initial set of heuristics, they also were evaluated. Results of the experiments led to a leaner set of 13 NUI heuristics, with a compliance scale ranging from –4 to 4. The heuristics in the revisited set were defined, described and illustrated in the context of the experiments, so that they can be useful for designers and evaluators.
KeywordsNatural user interfaces Design Usability Accessibility
We thank the volunteers who participated in the experiments, Samsung Research for the hardware equipment and Microsoft and FAPESP for the grant #2012/50468-6. We also thank CAPES (grant #01-P-04554/2013) and CNPq (grants #141254/2014-9, #308618/2014-9 and #308882/2013-0). Unicamp Institutional Review Board (CAAE 15641313.7.0000.5404 and 31818014.0.0000.5404) approved this work.
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