Emerging above-surface technology is an opportunity to exploit interaction spaces above a device’s surface; however, the resulting loss of the proprioceptive feedback available from on-surface interactions degrades the user’s sense of control and precision. We asked whether a pseudohaptic illusion (PHI) could help: a sense of force in the absence of actual contact, induced by manipulating the relation of body motion to graphical and auditory cues. To examine the value of above-surface PHIs, we used a zooming microtask, because finger occlusion impedes current implementations on small displays such as smartwatches. In a qualitative study (N = 12), we were able to trigger a physical illusion most often described as elasticity in 92% of participants through physical control/graphical display (C/D) manipulation, and that audio cues significantly strengthened the illusion. Participants experiencing this PHI reported improved sense of control when zooming, and found the interaction’s physicality natural.
CITATION STYLE
Ustek, D., Chow, K., Zhang, H., & MacLean, K. (2018). A multimodal illusion of force improves control perception in above-surface gesture: Elastic zed-zoom. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 10893 LNCS, pp. 295–308). Springer Verlag. https://doi.org/10.1007/978-3-319-93445-7_26
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