Pedestrian Gps Devices For Blind

What follows is a product evaluation by the staff of the international braille and technology center for the blind of the gps technology for the blind which is currently available for purchase in the united states.

Pedestrian gps devices for blind.

Blind people need to be educated about which devices are accessible. A review of trekker bluetooth version 2 7. Lazarrio is a free navigation app similar to blindsquare and nearby explorer. The computer converts this data to a position on an electronic map of locality.

The outdoor positioning system is based on signals and satellites which give the longitude and latitude to within a metre. Review of the lazarillo app a free gps navigation app for ios or android phones for travelers who are visually impaired or blind. Accessible pedestrian signals aps began to emerge in the 1970s in the united states and have since largely evolved to adapt to their environment and their users. Gps could provide them with a remarkable autonomy.

Unfortunately gps accuracy geographical information system gis data and map matching techniques are adapted to vehicle navigation only and fail in assisting pedestrian navigation especially for the blind. This device allows blind pedestrians to cross the road at the right time more quickly and safely while maintaining their orientation throughout the crossing. With the addition of devices to give the precise current position and orientation of the blind pedestrian the system could then be used outdoors.