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  • Journal of Theoretical and Applied Electronic Commerce Research
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  • Universidad de Talca
  • Journal of Theoretical and Applied Electronic Commerce Research
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Text Entry in the E-Commerce Age: Two Proposals for the Severely Handicapped

Author
Miró-Borrás,Julio

Bernabeu-Soler,Pablo

Full text
https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-18762009000100009
Abstract
People with severe motor disabilities have extreme access difficulties with all kinds of web services especially when they want not only to surf the web, but also write some text, e.g., to participate in an e-activity. Several problems arise when using traditional scanning systems, such as the low text entry rate, the time consuming task of learning the sean matrix layout, or simply, the poor visibility of the web page due to the large surface needed to display the complete sean matrix on the screen. We propose a reduced virtual keyboard based on scanning with only one switch as input device. The sean matrix consists of only three cells, so ambiguity is present due to the assignment of 26 characters to the three keys. Word-level and character-level disambiguation modes are explored using a mathematical model, and the text entry rates for an expert user were 15.9 and 10.3 words per minute respectively, using a sean period of 0.5 seconds. This keyboard could be embedded into a web page using a Java applet, JavaScript code or a Flash application, or be programmed as an independent application.
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Discipline
Artes, Arquitectura y UrbanismoCiencias Agrarias, Forestales y VeterinariasCiencias Exactas y NaturalesCiencias SocialesDerechoEconomía y AdministraciónFilosofía y HumanidadesIngenieríaMedicinaMultidisciplinarias
Institutions
Universidad de ChileUniversidad Católica de ChileUniversidad de Santiago de ChileUniversidad de ConcepciónUniversidad Austral de ChileUniversidad Católica de ValparaísoUniversidad del Bio BioUniversidad de ValparaísoUniversidad Católica del Nortemore

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