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· Not everyone has everything working right, in physical terms.
· Not everyone can see perfectly,
· Not everyone can hear perfectly,
· Not everyone can move perfectly.
· For example the some people can only ever seen out of one
eye - '3D' means nothing (you need both eyes working to
sense the world in 3 dimensions) - so the current fad of 3D
cinema is a complete mystery. i.e. the experience is
'inaccessible' because of a physical problem.…read more

Slide 3

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Accessibility Issues
· There are an estimated six million disabled and older web
users in the UK. However, many websites still continue to
cause problems for them.
· Common issues that arise when disabled users surf the web
· sites which are incompatible with screen readers
· text that is difficult to read
· websites that don't allow access for non-mouse users
· over-fussy and distracting layouts
· In 2008 the World Wide Web Consortium drew up a set of
guidelines to improve web accessibility.
· However, it is estimated that only 19% of websites meet the
minimum standard for web access.…read more

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An example of a problem
· http://news.bbc.co.uk/1/hi/technology/7792662.stm…read more

Slide 5

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· In order to make the web a bit easier to use, a number of
organisations have come out with guidelines on how to put
together a well-designed, accessible web site.
· 1. Use high contrast to help make it easier to read.
· For instance, which of these do you think is the easier to read?
The one on the right has a high contrast between background
and the text, whilst the one on the left has very little contrast.
A sensible thing to do when designing a web site in any case.
It is amazing how many sites ignore this idea just to be a bit
'arty'.…read more

Slide 6

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· 2. Use sensible font sizes if you want to make it
· For example, 22 points is better than 8 points
· 3. If you have an image, then build in some text
description as well.
· This is called an 'Alt' tag. If the website visitor cannot see
the image, then hovering over it with the mouse will
allow text readers to speak out the descriptions. Like this
now the image below of the same flowers is deliberately
missing and so you see the Alt tag.…read more

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