BrailleType: Unleashing Braille over Touch Screen Mobile Phones - Human-Computer Interaction – INTERACT 2011 Access content directly
Conference Papers Year : 2011

BrailleType: Unleashing Braille over Touch Screen Mobile Phones

João Oliveira
  • Function : Author
  • PersonId : 1016860
Tiago Guerreiro
  • Function : Author
  • PersonId : 1016859
Hugo Nicolau
  • Function : Author
  • PersonId : 1016862
Joaquim Jorge
  • Function : Author
  • PersonId : 1016830
Daniel Gonçalves
  • Function : Author
  • PersonId : 1016863


The emergence of touch screen devices poses a new set of challenges regarding text-entry. These are more obvious when considering blind people, as touch screens lack the tactile feedback they are used to when interacting with devices. The available solutions to enable non-visual text-entry resort to a wide set of targets, complex interaction techniques or unfamiliar layouts. We propose BrailleType, a text-entry method based on the Braille alphabet. BrailleType avoids multi-touch gestures in favor of a more simple single-finger interaction, featuring few and large targets. We performed a user study with fifteen blind subjects, to assess this method’s performance against Apple’s VoiceOver approach. BrailleType although slower, was significantly easier and less error prone. Results suggest that the target users would have a smoother adaptation to BrailleType than to other more complex methods.
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Dates and versions

hal-01590581 , version 1 (19-09-2017)





João Oliveira, Tiago Guerreiro, Hugo Nicolau, Joaquim Jorge, Daniel Gonçalves. BrailleType: Unleashing Braille over Touch Screen Mobile Phones. 13th International Conference on Human-Computer Interaction (INTERACT), Sep 2011, Lisbon, Portugal. pp.100-107, ⟨10.1007/978-3-642-23774-4_10⟩. ⟨hal-01590581⟩
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