Gestural text entry on multiple devices

Authors:
Jacob O. Wobbrock;Brad A. Myers
Affiliations:
Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA
Venue:
Proceedings of the 7th international ACM SIGACCESS conference on Computers and accessibility
Year:
2005

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Abstract

We present various adaptations of the EdgeWrite unistroke text entry method that work on multiple computer input devices: styluses, touchpads, displacement and isometric joysticks, four keys or buttons, and trackballs. We argue that consistent, flexible, multi-device input is important to both accessibility and to ubiquitous computing. For accessibility, multi-device input means users can switch among devices, distributing strain and fatigue among different muscle groups. For ubiquity, it means users can "learn once, write anywhere," even as new devices emerge. By considering the accessibility and ubiquity of input techniques, we can design for both motor-impaired users and "situationally impaired" able-bodied users who are on-the-go. We discuss the requirements for such input and the challenges of multi-device text entry, such as solving the segmentation problem. This paper accompanies a demonstration of EdgeWrite on multiple devices.