Blind People and Mobile Keypads: Accounting for Individual Differences

Abstract : No two persons are alike. We usually ignore this diversity as we have the capability to adapt and, without noticing, become experts in interfaces that were probably misadjusted to begin with. This adaptation is not always at the user’s reach. One neglected group is the blind. Age of blindness onset, age, cognitive, and sensory abilities are some characteristics that diverge between users. Regardless, all are presented with the same methods ignoring their capabilities and needs. Interaction with mobile devices is highly visually demanding which widens the gap between blind people. Herein, we present studies performed with 13 blind people consisting on key acquisition tasks with 10 mobile devices. Results show that different capability levels have significant impact on user performance and that this impact is related with the device and its demands. It is paramount to understand mobile interaction demands and relate them with the users’ capabilities, towards inclusive design.
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Tiago Guerreiro, João Oliveira, João Benedito, Hugo Nicolau, Joaquim Jorge, et al.. Blind People and Mobile Keypads: Accounting for Individual Differences. Pedro Campos; Nicholas Graham; Joaquim Jorge; Nuno Nunes; Philippe Palanque; Marco Winckler. 13th International Conference on Human-Computer Interaction (INTERACT), Sep 2011, Lisbon, Portugal. Springer, Lecture Notes in Computer Science, LNCS-6946 (Part I), pp.65-82, 2011, Human-Computer Interaction – INTERACT 2011. 〈10.1007/978-3-642-23774-4_8〉. 〈hal-01590562〉

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