Inclusive Design of
Smart Card Systems
John Gill
30th September 2009
People with Special Needs in the UK
Children (<16 years)
20%
Older people (>65 years)
16%
Disabled (wrt ICT)
10%
Primary language not English
Left-handed
Warning:
Treat these figures solely as
indicative of the order of magnitude.
5%
10%
Measuring Prevalence
Medical
• under reporting
• poor indicator of numbers with problems
Functional
• numbers vary depending on definition
Fund raising
Users with Problems Using ICT
0.4%
5%
Wheelchair users
Cannot walk without
an aid
2.8%
1.4%
Reduced strength
Reduced co-ordination
0.25%
0.6%
Speech impaired
Language impaired
Users with Problems Using ICT
1%
3%
Dyslexic
Intellectually impaired
0.1%
6%
Deaf
Hard of hearing
0.4%
1.5%
Blind
Low vision
Multiple Impairments
• More than half of people with a
disability have a significant
additional impairment
• Increasing numbers - mainly older
people
• Not homogeneous population
The Effects of Ageing
• In a 60 year old, one third light reaches
retina compared with when they were 20
• Decline in visual accommodation
• Reduction in contrast sensitivity
• Slower in adapting to changes in
illumination
• Multi-tasking less easy
Visual Presentation
• Use a solid colour background
• Good contrast
• Avoid italics and underlining
• NOT ALL CAPITAL LETTERS
• Use a suitable typeface
Choice of Fonts
Charles III Ill Illegible
69
Choice of Fonts
Charles III Ill Illegible
69
Charles III Ill Illegible
69
Choice of Fonts
Charles III Ill Illegible
69
Charles III Ill Illegible
69
[email protected]
Choice of Fonts
Charles III Ill Illegible
69
Charles III Ill Illegible
69
[email protected]
[email protected]
Keypads
Notch for Card Orientation
User Interface Preferences
• Button or menu
• Stored in a central database
• Stored on the user’s card
(EN 1332-4)
User Interface Preferences
•
•
•
•
•
•
•
•
•
•
Input requirements (eg voice input)
Pointer
Display (eg font, icons, scrolling)
Language
Audio output (eg volume, headset)
Time outs
Complexity level
Captions (eg veiling)
Audio description
Clean audio
SNAPI
• Developing software for a range of
applications
• Running pilot schemes
• Evaluating with users with a wide range
of abilities
www.snapi.org.uk
Good design for
people with
disabilities is
frequently good
design for
everyone.
Dr John Gill OBE, FIET
John Gill Technology Ltd
The Grange, 85 High Street, Iver, Bucks SL0 9PN
Tel 07590 982 732
[email protected]
www.johngilltech.com