Disabled ‘R’ All Bridging the gap between Accessibility and Usability Hugo Nicolau [email protected]
Disabled ‘R’ All: Bridging the gap between Accessibility and Usability
Jul 04, 2015
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Disabled ‘R’ All
Bridging the gap between
Accessibility and Usability
Hugo Nicolau [email protected]
Mobile devices
Powerful tools
Always near us
@ Home
@ Work
Outdoors
In car
@ Coffee shop
@ Subway
@ Airplain
And many many others …
Many contexts
CONTEXT
Overload
Leading to …
SIID
Motor capabilities
Loss of physical stability
Motor impaired
Similar problems?
Do they benefit from …
Similar solutions?
Goal
Solutions designed for motor-impaired users
can be applied on mobile devices by assessing
the users’ capabilities within real mobile
contexts and thus enhancing their performance
Hypothesis
“
”
Knowledge sharing and reuse
“Reinventing the wheel”
More and better research
Cost and availability
New connotation
RELATED WORK
Context
Sears, 2003
Understanding SIID
Brewster, 2002
+ 17% workload
-32% data entered
Lin et al., 2007
Error rate 65% - 3%
Schedlbauer et al., 2007
Schildbach et al., 2010
Mizobuchi, 2005
Dealing with SIID (Mistry et al., 2009) (Harrison et al., 2010)
(Sawheny and Schmandt, 2000) (Wigdor and Balakrisham, 2003)
Karlson, 2007; Baudisch, 2009
(Karlson and Bederson, 2007)
ThumbSpace
(Baudisch and Chu, 2009)
Context-aware interfaces
(Kane et al., 2008)
Alternative techniques
(Yatani and Troung, 2009)
Gesture interfaces
(Guerreiro, 2009) (Goldberg, 1993)
(Yfantidis, 2006)
(Bach, 2008)
Discussion on SIID
Target selection
Text-entry
Increase size
Evaluation
Still in its infancy
Understanding HIID
Dropping and long press D
rop
pin
g Lo
ng
pre
ss
> ffffffffffffff (Brown, 1992)
Bounce and additional press A
dd
itio
nal
B
ou
nce
(Vanderheiden, 1993; Edwards, 1995; Poulson et al. 1996)
Trewin, 1999
0 500 1000 1500 2000 2500 3000
Long
Additional
Missing
Dropping
Bounce
Remote
Transposed
Mouse manipulation
Near misses
Not-so-near misses
Slips
Accidental clicks
Middle button press
(Riviere and Thakor, 1996; Hwang et al. 2004; Keates et al., 2005)
Touch screens
(Guerreiro et al., 2010)
Dealing with HIID
Edge-based interfaces
(Froehlich et al., 2007)
Barrier Pointing
EdgeWrite
(Wobbrock et al., 2003)
Pointing
(Trewin et al., 2006)
Steady Clicks SUPPLE
(Gajos et al., 2007)
Filters
Suggestion and configuration systems
Word correction and prediction systems
Alternative techniques
Text-Entry solutions
Filters
Windows
Sticky keys Slow keys Repeat keys Mouse keys
OverlapKeys
(Trewin, 2002)
Suggestion systems
(Trewin and Pain, 1997)
(Koester et al., 2007)
Word correction
True Keys
(Kane et al., 2008)
Alternative techniques
Spread Keys
(Merlin and Raynal, 2010)
EdgeWrite
(Wobbrock et al., 2003)
Discussion HIID
Greater focus on problems
Reuse “soft-solutions”
Opportunities
APPROACH
Similar approaches
Focus on disability
Rather than …
Ability
Touch screens
Preliminary studies
(Guerreiro et al., 2010)
Tapping
Crossing
Exiting
Gesturing
Size
7 mm 12 mm 17 mm
Screen areas
Tapping
Size
12 mm 22%
Near support
Ability-design
Workplan
Selection techniques for touch screens
Text-entry errors (HIID)
Text-entry errors (SIID)
How do users select targets?
Development
Similar problems?
Similar solutions? Evaluation
What solutions?
Tapping
Selection techniques for touch screens
Text-entry errors (HIID)
Text-entry errors (SIID)
How do users select targets?
Development
Similar problems?
What solutions?
Similar solutions? Evaluation
Similar problems?
Selection techniques for touch screens
Text-entry errors (HIID)
Text-entry errors (SIID)
How do users select targets?
Development
Similar problems?
Similar solutions? Evaluation
What solutions?
Text-entry
Capture abilities
HIID
SIID
Intra analysis
Inter analysis
Comparison
What solutions?
Selection techniques for touch screens
Text-entry errors (HIID)
Text-entry errors (SIID)
How do users select targets?
Development
Similar problems?
What solutions?
Similar solutions? Evaluation
Filters
Configuration and suggestion systems
Orthographic correctors
Alternative techniques
Three to five solutions
Development
Similar solutions?
Selection techniques for touch screens
Text-entry errors (HIID)
Text-entry errors (SIID)
How do users select targets?
Development
Similar problems?
What solutions?
Similar solutions? Evaluation
Hypothesis validation
Solutions designed for motor-impaired users
can be applied on mobile devices by assessing
the users’ capabilities within real mobile
contexts and thus enhancing their performance
“
”
Most adequate solutions
Erro
r ra
te (
%)
100
0 Physical Impaired Situational Impaired
Traditional Alternative
2 x
2 x
1. Analysis of selection techniques
2. Identify text-entry difficulties for motor impaired users
3. Performance analysis whilst mobile
4. Mobile prototypes for text-entry tasks
5. User study with accessibility solutions
6. Guidelines for technology transfer
Expected contributions
1. Similar selection techniques
2. Relationship between physical and situational impairments
3. Solutions can be transferred between user groups
Expected Results
Workplan
2010:
Full paper – ASSETS’10
Short paper – Mobile HCI’10
2011:
Doctoral consortium – ASSETS ‘11
Journal paper
2012: Full paper – ASSETS’12
Full paper – Mobile HCI’12
2013: Full paper – ASSETS’13
Full paper – CHI’13
Expected publications
Questions
Related Documents
