Abstract
Ambiguous keyboards can be used instead of scan matrices in Scanning Systems in order to increase the text entry rate. We present a novel alternative to assigning letters to keys by taking into consideration the shapes of lowercase letters in order to create simple layouts, leading to families of keyboards with 2, 3 and 4 keys. We have chosen the best 3-key layout using a single switch scanning system and a word level disambiguation algorithm with a 10,911 word dictionary and we have tested it. We predict 16.6 wpm for an expert user with a 0.5 second scan period.
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References
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Miró-Borrás, J., Bernabeu-Soler, P., Llinares, R., Igual, J. (2010). An Ambiguous Keyboard Based on "Character Graphical Association" for the Severely Physically Handicapped. In: Miesenberger, K., Klaus, J., Zagler, W., Karshmer, A. (eds) Computers Helping People with Special Needs. ICCHP 2010. Lecture Notes in Computer Science, vol 6180. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14100-3_22
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DOI: https://doi.org/10.1007/978-3-642-14100-3_22
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