“Cyber Crumbs for Successful Aging With Vision Loss”

Researchers at the Atlanta VA Rehabilitation Research and Development
Center have collaborated with Charmed Technology to develop Cyber Crumbs,
an electronic system that functions like a trail of bread crumbs to help
visually impaired people efficiently navigate through unfamiliar
http://www.acm.org/technews/articles/2004-6/0707w.html#item19

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