It's no exaggeration to say that the recently released NVDA upgrade is a huge step forward for PDF accessibility. With respect to tables, NVDA now matches JAWS in almost every way that matters, and in some respects it is significantly better. NVDA is now a realistic alternative to JAWS.
Le-Chal is a way finding aid for the visually impaired that uses a language of vibrations, complementing their natural adaptations and extends their limitations.
It is important to evaluate the accessibility of web content with a screen reader, but screen readers can be very complicated programs for the occasional user, so many people avoid them. This doesn't need to be the case. While screen readers are complicated, it is possible to test web content for accessibility without being a "power user."
One of the common misconceptions people tend to have about assistive technologies is that assistive technologies can “make things accessible”. The assumption in such cases seems based on an incomplete understanding of how assistive technologies work
Semantic automation is when user agents, such as browsers and screen readers, create meaning and relationships where the presented meaning and relationships are missing, ambiguous, or incorrect. In short, it’s applying algorithms to try and fix things that are probably broken. It’s computers guessing for good.
This article is about how screen readers speak the content added with CSS pseudo-elements :before and :after
What Frustrates Screen Reader Users on the Web: A Study of 100 Blind Users - International Journal of Human-Computer Interactionby Monique
The short answer is that you can’t. At the time of writing there isn’t a way to reliably detect whether someone visiting your site is using a screen reader (or screen magnifier). You might have heard that Flash will do the trick, but that might not be quite the solution you’re expecting.
This paper looks at some technologies and concepts used by people with disabilities, and how these technologies and ideas have grown from, or with assistive technology.
some tips to get you started when setting up a screen reader testing environment.