1. A system for determining the geographic position of a blind pedestrian, comprising: a global positioning system (GPS) receiver; a computer receiving first coordinates from said GPS receiver representing the system's position; instructions for accessing second coordinates representing locations in a region where said system is located to said computer, said instructions further accessing an associated feature list which contains specific features that describe said location and a file created during use of said system relative to locations travelled by said blind pedestrian; first instructions in said computer for defining plurality correlations between said first coordinates and said second coordinates; second instructions in said computer for selecting one of said plurality correlations and its associated features that are appropriate for said blind pedestrian; and a voice synthesizer linked to said computer for phonetically describing the selected correlation and its associated features and relative to said file so that said pedestrian can audibly determine his position relative to said location.