Danish carpenter Han Jorgen Wiberg is a visually-impaired person himself. He invented the iphone app Be My Eyes to help other blind and visually-impaired people to "see" things when they need. What surprised him and his colleagues is that the volunteers are so excited and happy to be able to help.

In this exclusive interview Be My Eyes - an app to lend your eyesight and help all, Hans explains what are the essential ingredients of the invention. 

Photo by Yitiao