So one of my questions on technologies to support visually-impaired residents in SL is answered by this project. It looks as if IBM do some very interesting research, and we can only hope that it becomes widely available. I can also see the usefulness of this project for helping teach those that have recently lost their sight, to move around in real life.
Sonar is something of a dream, the project idea for the London Underground hasn't materialised. I've seen this product by Wayfinder, called Wayfinder Access, though I haven't tested it out. Their other software works well though. www.wayfinder.com
http://news.bbc.co.uk/1/hi/technology/6993739.stm
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