João Guerreiro
André Rodrigues
Kyle Montague
Tiago Guerreiro
Hugo Nicolau
Daniel Gonçalves
ABSTRACT
Tablet devices can display full-size QWERTY keyboards similar to the physical ones. Yet, the lack of tactile feedback and the inability to rest the fingers on the home keys result in a highly demanding and slow exploration task for blind users. We present SpatialTouch, an input system that leverages previous experience with physical QWERTY keyboards, by supporting two-handed interaction through multitouch exploration and spatial, simultaneous audio feedback. We conducted a user study, with 30 novice touchscreen participants entering text under one of two conditions: (1) SpatialTouch or (2) mainstream accessibility method Explore by Touch. We show that SpatialTouch enables blind users to leverage previous experience as they do a better use of home keys and perform more efficient exploration paths. Results suggest that although SpatialTouch did not result in faster input rates overall, it was indeed able to leverage previous QWERTY experience in contrast to Explore by Touch.
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Digital Library
- Barrett, J. Performance effects of reduced proprioceptive feedback on touch typists and casual users in a typing task. Behaviour & Information Tech. 13 (6) (1994).Google Scholar
- Brungart, D. S., Simpson, B. D. Improving multitalker speech communication with advanced audio displays. Air Force Res. Lab Wright Patterson AFN OH (2005).Google Scholar
- Guerreiro, J., Gonçalves, D. Text-to-Speeches: Evaluating the Perception of Concurrent Speech by Blind People. In Proceedings of ASSETS (2014). Google ScholarDigital Library
- Kim, S et al. TapBoard: making a touch screen keyboard more touchable. In Proceedings of CHI (2013). Google ScholarDigital Library
- Nicolau, H. et al. B#: chord-based correction for multitouch braille input. In Proceedings of CHI (2014). Google ScholarDigital Library
- Oliveira, J. et al. Blind people and mobile touch-based text-entry: acknowledging the need for different flavors. In Proceedings of ASSETS (2011). Google ScholarDigital Library
- Rodrigues, A., Guerreiro, T. SWAT: Mobile System-Wide Assistive technologies. Proceedings of BCS HCI (2014). Google ScholarDigital Library
- Southern, C. et al. An evaluation of BrailleTouch: mobile touchscreen text entry for the visually impaired. In Proceedings of Mobile HCI (2012). Google ScholarDigital Library
Index Terms
- TabLETS Get Physical: Non-Visual Text Entry on Tablet Devices
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