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Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
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Disabled ‘R’ All: Bridging the gap between Accessibility and Usability

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  • 1. Disabled ‘R’ All Bridging the gap betweenAccessibility and Usability Hugo Nicolau hman@vimmi.inesc-id.pt
  • 2. Mobile devices
  • 3. Powerful tools
  • 4. Always near us
  • 5. @ Home
  • 6. @ Work
  • 7. Outdoors
  • 8. In car
  • 9. @ Coffee shop
  • 10. @ Subway
  • 11. @ Airplain
  • 12. And many many others …
  • 13. Many contexts CONTEXT
  • 14. Overload
  • 15. Leading to … SIID
  • 16. Motor capabilities
  • 17. Loss of physical stability
  • 18. Motor impaired
  • 19. Similar problems?
  • 20. Do they benefit from … Similar solutions?
  • 21. Goal
  • 22. Hypothesis“Solutions designed for motor-impaired userscan be applied on mobile devices by assessingthe users’ capabilities within real mobilecontexts and thus enhancing their performance ”
  • 23. Knowledge sharing and reuse
  • 24. “Reinventing the wheel”
  • 25. More and better research
  • 26. Cost and availability
  • 27. New connotation
  • 28. RELATED WORK
  • 29. Context Sears, 2003
  • 30. Understanding SIID
  • 31. Brewster, 2002 + 17% workload -32% data entered
  • 32. Lin et al., 2007 Error rate 65% - 3%
  • 33. Schedlbauer et al., 2007
  • 34. Schildbach et al., 2010
  • 35. Mizobuchi, 2005
  • 36. Dealing with SIID(Harrison et al., 2010) (Mistry et al., 2009)(Sawheny and Schmandt, 2000) (Wigdor and Balakrisham, 2003)
  • 37. Karlson, 2007; Baudisch, 2009ThumbSpace(Karlson and Bederson, 2007) (Baudisch and Chu, 2009)
  • 38. Context-aware interfaces (Kane et al., 2008)
  • 39. Alternative techniques (Yatani and Troung, 2009)
  • 40. Gesture interfaces (Yfantidis, 2006) (Bach, 2008) (Guerreiro, 2009) (Goldberg, 1993)
  • 41. Discussion on SIID
  • 42. Target selection
  • 43. Text-entry
  • 44. Increase size
  • 45. Evaluation
  • 46. Still in its infancy
  • 47. Understanding HIID
  • 48. Dropping and long pressDroppingLong press > ffffffffffffff (Brown, 1992)
  • 49. Bounce and additional pressAdditionalBounce(Vanderheiden, 1993; Edwards, 1995; Poulson et al. 1996)
  • 50. Trewin, 1999 Transposed Remote Bounce Dropping Missing Additional Long 0 500 1000 1500 2000 2500 3000
  • 51. Mouse manipulation(Riviere and Thakor, 1996; Hwang et al. 2004; Keates et al.,2005) Near misses Not-so-near misses Slips Accidental clicks Middle button press
  • 52. Touch screens (Guerreiro et al., 2010)
  • 53. Dealing with HIID
  • 54. Edge-based interfaces Barrier Pointing EdgeWrite (Froehlich et al., 2007) (Wobbrock et al., 2003)
  • 55. PointingSUPPLE Steady Clicks(Gajos et al., 2007) (Trewin et al., 2006)
  • 56. Text-Entry solutionsFiltersSuggestion and configuration systemsWord correction and prediction systemsAlternative techniques
  • 57. Filters Windows Sticky keys Slow keys OverlapKeys Repeat keys Mouse keys (Trewin, 2002)
  • 58. Suggestion systems (Trewin and Pain, 1997) (Koester et al., 2007)
  • 59. Word correction True Keys (Kane et al., 2008)
  • 60. Alternative techniquesSpread Keys(Merlin and Raynal, 2010) EdgeWrite (Wobbrock et al., 2003)
  • 61. Discussion HIID
  • 62. Greater focus on problems
  • 63. Reuse “soft-solutions”
  • 64. Opportunities
  • 65. APPROACH
  • 66. Similar approaches
  • 67. Focus on disability
  • 68. Rather than … Ability
  • 69. Touch screens
  • 70. Preliminary studies (Guerreiro et al., 2010)
  • 71. Tapping
  • 72. Crossing
  • 73. Exiting
  • 74. Gesturing
  • 75. Size 7 mm 12 mm 17 mm
  • 76. Screen areas
  • 77. Tapping
  • 78. Size 12 mm 22%
  • 79. Near support
  • 80. Ability-design
  • 81. WorkplanHow do users select Selection techniques fortargets? touch screens Text-entry Text-entrySimilar problems? errors (HIID) errors (SIID)What solutions? DevelopmentSimilar solutions? Evaluation
  • 82. TappingHow do users select Selection techniques fortargets? touch screens Text-entry Text-entrySimilar problems? errors (HIID) errors (SIID)What solutions? DevelopmentSimilar solutions? Evaluation
  • 83. Similar problems?How do users select Selection techniques fortargets? touch screens Text-entry Text-entrySimilar problems? errors (HIID) errors (SIID)What solutions? DevelopmentSimilar solutions? Evaluation
  • 84. Text-entry
  • 85. Capture abilities
  • 86. HIID
  • 87. SIID
  • 88. ComparisonIntra analysisInter analysis
  • 89. What solutions?How do users select Selection techniques fortargets? touch screens Text-entry Text-entrySimilar problems? errors (HIID) errors (SIID)What solutions? DevelopmentSimilar solutions? Evaluation
  • 90. Three to five solutionsFiltersConfiguration and suggestion systemsOrthographic correctorsAlternative techniques
  • 91. Development
  • 92. Similar solutions?How do users select Selection techniques fortargets? touch screens Text-entry Text-entrySimilar problems? errors (HIID) errors (SIID)What solutions? DevelopmentSimilar solutions? Evaluation
  • 93. Hypothesis validation“Solutions designed for motor-impaired userscan be applied on mobile devices by assessingthe users’ capabilities within real mobilecontexts and thus enhancing their performance ”
  • 94. Most adequate solutions 100 Error rate (%) 2x 2x 0 Physical Impaired Situational Impaired Traditional Alternative
  • 95. Expected contributions1. Analysis of selection techniques2. Identify text-entry difficulties for motor impaired users3. Performance analysis whilst mobile4. Mobile prototypes for text-entry tasks5. User study with accessibility solutions6. Guidelines for technology transfer
  • 96. Expected Results1. Similar selection techniques2. Relationship between physical and situational impairments3. Solutions can be transferred between user groups
  • 97. Workplan
  • 98. Expected publications2010: Full paper – ASSETS’10 Short paper – Mobile HCI’102011: Doctoral consortium – ASSETS ‘11 Journal paper2012: Full paper – ASSETS’12 Full paper – Mobile HCI’122013: Full paper – ASSETS’13 Full paper – CHI’13
  • 99. THE ENDHugo Nicolauhman@vimmi.inesc-id.pt
  • 100. Questions

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