Inclusive Design of Smart Card Systems

transcript

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 PrevalenceMedical• 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 FontsCharles III Ill Illegible 6 9

Charles III Ill Illegible 6 9

smi1@aol.com

smi1@aol.comsmi1@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 LtdThe Grange, 85 High Street, Iver, Bucks SL0

Tel 07590 982 732johngill@btconnect.comwww.johngilltech.com

Inclusive Design of Smart Card Systems

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