According to data from the World Health Organization globally there are 285 million visually impaired people of which 39 million are totally blind.
Using a technique similar to what bats and dolphins use, human biolocators navigate using audio cues given off by reflective surfaces in the environment. Few people know that this same technique can work for human beings.
Biolocator SEZUAL is an assistive device for blind and visually impaired people to fully navigate in open space without external assistance. The device emits a specific high-pulse click reflecting back from the surrounding objects to provide information on their shape, material and distance to them. Returning echo activates the visual processing area in the brain of trained echolocator.