3/09/2010

The problem with automated accessibility tools

Link to us : http://snipr.com/upwda

Do you all know what is an automated accessibility tool? Automated accessibility tool is a piece of software which can evaluate a web page, or even an entire website for accessibility purpose. Furthermore, automated accessibility tools are useful because they can save a huge amount of time.

But are these tools a little too good to be true?? Can you really assess a website for accessibility so easily? Unfortunately the answer is NO. There are a number of underlying problems associated with using just automated tools to check for accessibility.

The problem are as below :

1) Can't check many coding issues
The vast number of accessibility guidelines tend to be related to how the site is coded. Automated accessibility tools are unfortunately unable to check for many of the coding too. For example, HTML-related accessibility considerations which these tool's can't check for the coding as well.

2) Outdated guidelines are used
Automated accessibility tools generally uses the W3C accessibility guidelines, which by now are over five years old. As such, a number of guidelines were outdated and do not apply on it anymore. In fact, some of them are now thought to hinder accessibility rather than help, so it is better to totally ignore these outdated guidelines.

3) Most guidelines aren't properly checked
Automated accessibility tools can check for a number of guidelines, and can tell you when a guideline is not being adhered too. However, when the tool claims that a guideline is being fulfilled this may in fact be a false truth as automated accessibility tools were hardly recognize outdated guidelines.

4) Warnings may be misinterpreted
The reports generated by the automated accessibility tools provide warnings, as well as errors. These warnings are basically guidelines that the automated tool can't check for, but which may be errors. Often they are not, and in fact they are often not even relevant to it. However, some people reading a report may try to get rid of these warnings message by making an appropriate changes to their site for precaution. By doing this, they may be implementing guidelines that needn't be implemented and inadvertently lowering the website's accessibility.

As a conclusion, automated accessibility tools can be useful sometime as they can save a large amount of time in performing some very basic check for accessibility. However, they must be used with caution and they cannot be used as a stand-alone guide for accessibility checking. Indeed, some expert accessibility knowledge should always be applied in evaluating a site's accessibility not only replying on an automated accessibility tool itself.



Source: http://www.webcredible.co.uk/user-friendly-resources/web-accessibility/automated-tools.shtml

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