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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A Proposal paragraph accessibility and tactile visual electromagnetic devices touch screen. / Uma proposta para acessibilidade visual e tÃctil em dispositivos touchscreen.

Agebson Rocha FaÃanha 21 September 2012 (has links)
The use of touchscreen interfaces on smart phones and tablets bring tremendous benefits of connectivity and usability for their users. However, access to information via these devices represents a new challenge of interaction for users with visual impairments, after all, they have a glassy surface, with many visual elements, without reference to embossed tactile exploration. In this context, the study presents the main assistive technology to facilitate interaction of the visually impaired with touchscreen mobile devices and describes the fundamental aspects in an affordable touchscreen interface. From accessibility requirements found in the research, a group of three applications was designed and implemented (LÃBraille - Text Editor; LÃBrailleTWT - Twitter Client and LÃBrailleSMS - Setting send / receive SMS) with accessible interface via audible and tactile feedback, the Android platform. The proposals were evaluated by a group of visually impaired users. Although there were rates to be improved with respect to time for performing operations on input data, was possible to obtain improvements in the use of the touchscreen technology. / O uso de interfaces touchscreen em smartphones e tablets traz enormes benefÃcios de conectividade e usabilidade para seus usuÃrios. Contudo, o acesso à informaÃÃo atravÃs desses dispositivos representa um novo desafio de interaÃÃo para os usuÃrios com deficiÃncia visual, afinal possuem uma superfÃcie vÃtrea, com diversos elementos visuais, sem uma referÃncia em relevo para exploraÃÃo tÃctil. Nesse contexto, este trabalho de mestrado apresenta um estudo das principais tecnologias para facilitar a interaÃÃo do deficiente visual com dispositivos mÃveis touchscreen e elucida aspectos considerados fundamentais em uma interface touchscreen acessÃvel. Seguindo os requisitos de acessibilidade propostos, foi concebida e implementada uma suÃte com trÃs aplicativos (LÃBraille - Editor de texto; LÃBrailleTWT â Cliente Twitter e LÃBrailleSMS â Software de envio/recebimento de mensagens SMS) com interface acessÃvel atravÃs de feedbacks sonoros e tÃcteis, na plataforma Android. As propostas foram avaliadas por um grupo de usuÃrios deficientes visuais. E apesar de percentuais a serem melhorados em relaÃÃo ao tempo para execuÃÃo de operaÃÃes na entrada de dados, jà foi possÃvel obter avanÃos na utilizaÃÃo da tecnologia pelos mesmos.

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