Many people recognize the connection between GPS development and the benefits such a system could provide for the sophisticated blind traveler. Therefore, more and more references can be seen in the popular press, and numerous inventors and researchers are exploring the opportunities. Expect a proliferation of approaches to the GPS/blindness connection as the years unfold.
Also, there is an obvious convergence happening as signage and dead-reckoning come together with GPS to address the orientation needs of blind individuals.
There is a textbook located on this website concerning wayfinding technologies. For more information about GPS, refer to the text.