Priority level 3 accessibility certification
This is the most detailed level of web site accessibility. It is targeted specifically at the needs of any disabled person. Because it is so detailed it can have an impact on the current look of your website.
The Userite level 3 certificate is awarded when the web-designer has taken reasonable steps to ensure that the site complies with the priority 3 (level AAA) WAI guidelines. This means that all disabled users can expect to obtain exactly the same information and services as non-disabled users