Daniel Kish has been blind since he was a baby, but that hasn't stopped him living an active lifestyle. He has developed a unique technique known as "Flash Sonar", which is like human echolocation, to navigate his way around a sighted world. Daniel is now teaching his technique to thousands of other visually impaired men, women and children around the world. His story is truly remarkable.
This story was broadcast on Today Tonight, Seven Network Australia in 2013.