The document describes a mobile phone designed for blind users. It uses Braille and gesture-based inputs to allow blind people to make calls, send texts, and access other phone features independently. The phone was tested over multiple sessions, with results showing the gesture-based "NavTap" input method resulted in fewer errors and faster text entry speeds compared to the traditional Braille "MultiTap" method. The goal is to improve the mobile experiences and independence of blind users through accessible technology innovations.

1. A Mobile Phone for
Blind People
Daniel Gonçalves
Tiago Guerreiro
Hugo Nicolau
Joaquim Jorge
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11. e m ♥ i l y @flickr

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19. BrailleTap

23. Judepics @flickr

24. Hamed Masoumi @ flickr

28. Leroys @ sxc.hu

34. clix@sxc.hu

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NavTap

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47. Kevin Clarkson

50. 0%
10%
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1 2 3
MultiTap NavTap
Session
Error Rate

51. 0.80
0.88
0.68
1.07
1.32
1.37
0.0
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0.6
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1.0
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MultiTap NavTap
Words Per Minute
Session

57. NavTouch

63. 16
weeks

64. Before…
Make Calls
100%

65. Date Hour
Battery
Calculator
Alarm
Add Contact
Delete Contact
Search Contact
Make Call
Send SMS
After!

67. 1825 sent
1200 received