High Quality Content by WIKIPEDIA articles! There have been many attempts at integrating Global Positioning System into a navigation-assistance system for the blind. GPS was introduced in the late 1980s and since then there have been several research projects. Satellite navigation complements existing aids like the White cane or guide dogs but does not replace them. The Loadstone project is developing an open source software for satellite navigation for blind and visually impaired users. The software is free and runs currently on many different Nokia devices with the S60 platform under all versions of the Symbian operating system.

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