Minput: enabling interaction on small mobile devices with high-precision, low-cost, multipoint optical tracking

Authors:
Chris Harrison;Scott E. Hudson
Affiliations:
Carnegie Mellon University, Pittsburgh, PA, USA;Carnegie Mellon University, Pittsburgh, PA, USA
Venue:
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Year:
2010

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Abstract

We present Minput, a sensing and input method that enables intuitive and accurate interaction on very small devices -- ones too small for practical touch screen use and with limited space to accommodate physical buttons. We achieve this by incorporating two, inexpensive and high-precision optical sensors (like those found in optical mice) into the underside of the device. This allows the entire device to be used as an input mechanism, instead of the screen, avoiding occlusion by fingers. In addition to x/y translation, our system also captures twisting motion, enabling many interesting interaction opportunities typically found in larger and far more complex systems.