0401

Accessibility – Digital Culture Case study

Specification: Draft an accessibility strategy for a mobile app around 3 profiles.

Accessibility Issues:

1. Visual impairment
2. Cognitive overload
3. Memory difficulties
4. Lighting conditions

Recommendations:

Mobile App

• Leading setting 135% increase readability
• No paragraph indentations increase readability
• User adjustable font scaling to aid user visibility
• Line length of 90 to reduce conative load
• Avoid use of columns, hyphenation and typographic formatting to increase readability
• Design with user adjustable contrast to deal with lighting conditions and aid in visibility
• Ensure semantic structure of elements in maintained, and semantically correct text
• Compatibility with screen readers
• Ensure non-text content is appropriately supplied alt-text
• Screen rotation to fit more data on screen if user chooses
• Vertical scrolling at all range of app scaling applied by user

Print

• text uses large sizes of 24 to aid visibility
• Contrast ratio of 4.5:1 and 7:1 for smaller items to aid visibility
• Uses APHont to aid visibility in poor light conditions
• avoid super and subscript to increase visibility
• avoid the use of glossy paper to aid visibility

Map

• Maintain at least a contrast ratio of 3:1 to aid visibility