World Access for the Blind (WAFTB) is an international non-profit, non-governmental and educational organisation based in California, United States.
It tries to revolutionise the blind movement and promote learning of navigation based on knowledge of human perception, and a philosophy of No Limits.
[5] The organisation has successfully trained many blind and sighted students the technique of human echolocation called FlashSonar.
In fact, using this technique, there are a number of successful solo, unguided hikes at the Grand Canyon, Death Valley, Mount Whitney, and the Appalachian Trail.
[6] WAFTB was the consultant organisation in the scientific study of the neural basis of human echolocation at the University of Western Ontario in 2011.