Uma proposta para acessibilidade visual e táctil em dispositivos touchscreen

Abstract

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 (LêBraille - Text Editor; LêBrailleTWT - Twitter Client and LêBrailleSMS - 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.