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<p>It’s a bit different than that. A lot of vision impaired students (K-12 as well as college) use recorded books, generally from an organization such as [Recording</a> for the Blind & Dyslexic: Accessible Audiobooks for students with visual impairment, dyslexia or learning disabilities](<a href=“http://www.rfbd.org/]Recording”>http://www.rfbd.org/). </p>
<p>The books are recorded by volunteers who are familiar with the subject material. That allows them to do things like spell new terms or names, or give a meaningful description of illustrations, graphs, and the like. The recordings are in a special digital format. Combine that with the compatible reader (which makes the Kindle look cheap), and even blind users can navigate to specific pages or chapters.</p>
<p>There’s a library of already-recorded titles, and new volumes get added when a student gets assigned a text that’s not in the existing library. Sometimes there aren’t enough volunteers, and a text can’t be recorded in time. The Kindle would obviously be a tremendous thing to have as a quick 'n easy backup option. </p>
<p>I don’t know much about how blind people use computers, but I do know that there are things built into operating systems to make it possible. And since the Kindle can now automate reading any book out loud, the voice recognition capability already exists on the machine. So I can’t imagine that it would be an enormous engineering undertaking for Amazon to add in the ability for the Kindle to have voice recognition for its navigation menus. </p>
<p>There are a lot of other issues with using the Kindle for textbooks, anyway. Lighter, yes, but more expensive (can’t buy used, no resale market, can’t be used by more than one person at a time), poor quality reproduction of tables/illustrations/graphs in technical material, higher risk of theft, in which case you lose access to all your books. That case where a high school student lost his margin notes when Amazon yanked copies of George Orwell novels made my hair stand on end. All issues that can be worked out, and probably harder to work out than the vision-impaired navigation thing.</p>