Title: Imaginary Interfaces: Spatial Interaction with Empty Hands and without Visual Feedback
Author: Sean Gustafson, Daniel Bierwirth, Patrick Baudisch
Venue: UIST '10 Proceedings of the 23nd annual ACM symposium on User interface software and technology
Summary
This article is about "imaginary interfaces", or interfaces without visual feedback. Additionally, in the examples given in the article, there is no physical interaction with the device by the user either. Instead, the device monitors hand movements and determines what command the user is trying to convey. These commands are manifested by drawing with one hand, while using your other hand to anchor the virtual space. This gives the device a point of reference. The article states that users had some difficulty with remembering the different gestures they needed to make to accomplish things, as they have no visual cues to aid memory.
Discussion
I thought this article was really interesting, but it also has limited potential. This potential could be easily rectified with the addition of a visual interface possibly in the form of a projection. This would of course be counterproductive with regards to what the authors are attempting to research, but without a visual aid the system will be limited to simply applications. For example, this could have real application in cell phones and music players as a hands off alternative, but these devices are likely to still require a visual interface that users can use for more complicated tasks.
All things considered, I think voice recognition has a larger potential than this system. Voice recognition relies on our already huge vocabulary, where as this system essentially requires users to learn a new language. With the addition of a visual aid there could be some application as a replacement for keyboards on computers.
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