Details in: http://m-accessibility.blogspot.com This presentation focus on mobile accessibility for blind users. It presents a new text-entry method based on voice feedback and an alphabet navigation mechanism. It was presented at HCII 2007 in Beijing, PR China (July 2007). The demonstration video is available in http://www.youtube.com/watch?v=xbJ_qlFK5YQ

1. BloNo: Mobile Notebook for the Visually Impaired Tiago Guerreiro [email_address]

2. ‘‘ ’’ Never doubt that a small group of committed people can change the world. Indeed it is the only thing that ever has . — Margaret Mead

3. We have the whole world in our hands.

4. SMS have had an enormous growth in the last few years.

5. Mobile devices can do anything.

6. A common image for me.

7. What about the Others ?

8. Some can only see this.

10. They are too heavy .

11. They are too big .

12. . They are too expensive ...

13. And definitely not mobile .

15. Can speech synthesis replace visual feedback ?

19. Despair and drop out.

21. User Observation

22. Survey users’ habits and capacities User characterization Mobile Device usage User Observation 8 Questionnaires

23. All dial numbers All have a cell phone 20% stated difficulties with keypad Not a priority

24. < 50% the users can send messages They use a Screen Reader Difficulties with menu navigation and.. ... voice feedback

25. Half the users use the contact list Memorize the contact position

26. T h e Goal Mobile Device Control for Blind Individuals

27. Calls Info Dial Accept Reject

28. SMS Write Read Send Receive

29. Contacts Calendar Notebook

31. Keep it Simple.

32. ABCDEFGHIJLMNOPQRSTUVXZ

33. A B C D E F G H I J L M N O P Q R S T U V X Z

34. A B C D E F G H I J L M N O P Q R S T U V X Z

35. A B C D E F G H I J L M N O P Q R S T U V X Z

36. A B C D E F G H I J L M N O P Q R S T U V X Z A BCD E FGH I JLMN O PQRST U VXZ

37. We can navigate in any direction.

38. A BCDEFGHIJLMNOPQRSTUVX Z

39. A B C D E F G H I J L M N O P Q R S T U V X Z

41. A B C D E F G H I J L M N O P Q R S T U V X Z

43. A B C D E F G H I J L M N O P Q R S T U V X Z

44. DEMO VÍDEO http://www.youtube.com/watch?v=xbJ_qlFK5YQ

45. No wrong choices. Just shorter paths.

46. No memorization required.

48. (Almost) all mobile devices.

49. Automatic Word Finishing. Optimization mechanism On Demand Alphabetic vs Frequency Al m a oç a m ndo r o ugar

50. Al m a oç a m ndo r o ugar

51. Al m a oç a m ndo r o ugar

52. Al m a oç a m ndo r o ugar

53. Al m a oç a m ndo r o ugar

54. Al m a oç a m ndo r o ugar

55. Al m a oç a m ndo r o ugar

56. Al m a oç a m ndo r o ugar

57. Task-Aware Dictionaries.

59. User Evaluation Visually Impaired Foundation Five Totally Blind Users Braille Manual Six Different Tasks

60. 1 st Perdi o Autocarro e não vou chegar a horas. All users Succeeded 2 Words per Minute 1.4 Error / User 5.4 Keystrokes per character

61. 2 nd Perdi o Autocarro e não vou chegar a horas. All users Succeeded 10% Time reduction 1 Error / User 4.7 Keystrokes per character With Automatic Word Finishing

62. 1 2 3 4 5 50 100 150 200 250 300 Simple AWF Number of key presses

63. 3 rd Adding the contact Tiago Silva. All users Succeeded 125 Seconds / User 0,25 Error / User

64. 4 th Adding the contact Tiago Silva. All users Succeeded 84,5 Seconds / User 0 Error / User With Automatic Word Finishing

65. 5 th Adding the contact Tiago Silva. All users Succeeded 75,25 Seconds / User 0 Error / User With Automatic Word Finishing and Task-Aware Dictionary

66. 0 50 100 150 Simple AWF AWF + Dictionaries Optimization techniques Time Variation

67. 6 th Write the message ‘sim’ and send it to Paulo Lagoá. All users Succeeded 104 Seconds average Time includes letter acceptance and menu feedback All used AWF to select contact

68. Other Remarks All the users were satisfied Improved performance All succeeded Before BloNo: 50% weren’t able to write text Wrote text Managed Contacts Navigated menus

69. The Future Gestural Shortcuts Event Reception Prediction Usability Issues

71. Kevin Clarkson Martin Rotovnik

72. BloNo: Mobile Notebook For the Visually Impaired Paulo Lagoá Pedro Santana Daniel Gonçalves Joaquim Jorge Tiago Guerreiro [email_address]