inclusive design of smart card systems john gill 30 th september 2009
TRANSCRIPT
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 5%
Left-handed 10%
Warning: Treat these figures solely as indicative of the order of magnitude.
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% Wheelchair users5% Cannot walk without
an aid
2.8% Reduced strength1.4% Reduced co-ordination
0.25% Speech impaired0.6% Language impaired
Users with Problems Using ICT
1% Dyslexic3% Intellectually impaired
0.1% Deaf6% Hard of hearing
0.4% Blind1.5% 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 6 9
Choice of Fonts
Charles III Ill Illegible 6 9
Charles III Ill Illegible 6 9
Choice of Fonts
Charles III Ill Illegible 6 9
Charles III Ill Illegible 6 9
[email protected]@aol.com
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
www.johngilltech.com