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Accessible Design

Accessible design considers how different people perceive, understand and operate something. It identifies barriers and offers usable ways through them.

Who loses access when a design assumes everyone sees, hears or moves in the same way?

Raised bars and dots in yellow paving form routes and an intersection within surrounding paving.
Midnightcomm’s photograph of tactile paving in Japan shows information carried through surface form as well as colour. It is an example for observation, not an assessment of compliance or a construction specification.Midnightcomm · Source · CC BY 4.0

Look for a barrier in the design

A barrier can come from an interaction between a person’s circumstances and the way something is designed. Examples include information available only as sound, a control that requires a precise mouse movement, or instructions that rely on an unexplained visual position.

Web accessibility considers people with a range of disabilities and the technologies or strategies they may use. A design can also be easier to use in temporary or situational constraints, such as a noisy setting. These benefits do not remove the need to address disabled people’s access directly.

Preserve the meaning through another route

A useful alternative communicates what matters for the task. An image describing an exit route needs more than “picture of a map”; its important route information must be available in text or another suitable form. Captions, descriptive labels and keyboard operation solve different barriers.

Adding a second channel does not mean providing two unrelated versions. The alternatives should keep essential information and actions equivalent. “Click the green thing over there” needs a named control, not only another colour.

Worked example: a fictional quiz control

Imagine a quiz where correct answers appear green and incorrect answers red, with no words. The response also disappears after two seconds. A learner who cannot distinguish those colours or needs more reading time may miss the feedback.

A revision displays “Correct: the total is 12” or “Try again: count the four groups of three”, keeps it visible and associates it with the chosen answer. Buttons have descriptive labels and can be reached and activated from a keyboard. Each change addresses a particular barrier. The revision still needs checking with appropriate tools and users; the list is not a certificate that the entire quiz is accessible.

Check with people, not assumptions

Standards and early checks help identify common problems, while experiences of actual users can reveal barriers a checklist misses. A person should not have to disclose a diagnosis to justify a useful preference or alternative.

For this enquiry, inspect a supplied fictional design. Do not imitate disability by blindfolding someone or restricting their movement, and do not ask another person to reveal private experiences. You can describe a barrier and propose a change without claiming to know exactly how every person experiences it.

Only if you feel like trying

Preserve the essential action

  1. Choose the fictional quiz or sketch a made-up control. State the essential information and action.
  2. Identify one dependency on colour, sound, precision or speed.
  3. Propose an alternative that preserves the task, then name what would need checking before calling it successful.

Optional. Work on paper, point to the example or talk it through. No account, purchase or public sharing is needed.