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Navigating a 3D avatar using a single switch

Published: 29 June 2011 Publication History

Abstract

Many users with severe motor impairments, such as quadriplegics, interact with computers using an indirect selection technique called switch access scanning. Switch scanning allows for iteratively selecting an input from a set of input options using a single switch input and which replaces the use of a keyboard or a mouse, which they may be unable to use. Navigating an avatar in a 3D virtual world using existing switch access scanning systems is slow and erroneous because these interfaces are non-linear and requires players to provide continuous (holding a key) and mixed inputs (holding two or more keys). Through the analysis of navigation behavior of eight able-bodied users, a new scanning system called hold-and-release was developed. Using simulation hold-and-release scanning was found to be significantly more efficient than existing scanning systems. Multistep selection was found to be most efficient for mixing inputs, but expanding the selection set has no approximation errors.

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FDG '11: Proceedings of the 6th International Conference on Foundations of Digital Games
June 2011
356 pages
ISBN:9781450308045
DOI:10.1145/2159365
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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  • SASDG: Society for the Advancement of the Science of Digital Games

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Published: 29 June 2011

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Author Tags

  1. motor impairment
  2. scanning
  3. switch access
  4. virtual worlds

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FDG'11
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  • SASDG
FDG'11: Foundations of Digital Games
June 29 - July 1, 2011
Bordeaux, France

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FDG '11 Paper Acceptance Rate 31 of 107 submissions, 29%;
Overall Acceptance Rate 152 of 415 submissions, 37%

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