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LEC 9- Accessibility - Coggle Diagram
LEC 9- Accessibility
How to Design for Accessibility
Examples of Accesible designs
Time controlled content
session timeouts
extend option if needed
needs to end within a few minutes for security- bank transaction context
Check for contrast and colours
website contrast checker
Responsive Design
diff screen sizes
• Layout is flexible and adjusts to the screen size.
flexible design- not bound to a particular screen
Don't use just colour (for those that have vision difficulties like colour blindness)
shapes
signifiers
labels
icons
arrows and drawings
examples in the world of Accessibility
• Sensor operated taps- sensor taps in bathrooms can help with dexterity issues, older people. They just have to bring their hands close to the sensor.
• Raised bumps on the edges.
• Bumps on the floors at train stations for blind people.
• Bank notes have a tactile feature:
• Yellow colour is for warning.
• Ramps for wheelchair access
• Business cards with brail.
hi level principles
Make things as clear and simple as possible.
Enable multi-modal input and output
Allow users to access content without having to rely on just one their senses.
keyboard only dependent design is bad
Accessibility should be built in(think about in the initial stages) and not be an after thought in design.
Definitions
Tech is accessible if it can be used as effectively by people with disabilities as by those without
related to "Seek universal usability".
everyone should access and enjoy the web
Usability vs Accessibility
Usability
achieve specified goals with effectiveness, efficiency and satisfaction
Usability is not solely focused on accessibility it focuses on usability for everyone
Accessibility
ability to access and benefit from a system or entity
Accessibility Guidelines
WCAG
1.1- provide text alternatives for all non-text content
1.2-provide synchronised alternatives for multimedia
Principles
Understandable
Robust
Operable
Perceivable
There are laws/acts --> disability discrimination act 1992
