History's Youngest Heroes: Louis Braille: Code Maker

After losing his sight in a childhood accident, a young Frenchman invents a tool that will change the lives of blind people around the world.

Nicola Coughlan shines a light on extraordinary young people from across history. Join her for 12 stories of rebellion, risk and the radical power of youth.

This programme has been edited since first publication to remove the inaccurate suggestion that Charles Barbier’s raised dot code system was first developed for military use.

A BBC Studios Audio production for BBC Radio 4 and BBC Sounds.

Producer: Elaina Boateng
Series Producer: Suniti Somaiya
Executive Producer: Paul Smith
Written by Alex von Tunzelmann
Commissioning editor for Radio 4: Rhian Roberts