Africa is home to around one-third of the world's languages, but only a smattering of them are available online and in translation software. So when young Beninese computer scientist Bonaventure Dossou, who was fluent in French, experienced difficulties communicating with his mother, who spoke the local language Fon, he came up with an idea. Bonaventure and a friend developed a French to Fon translation app, with speech recognition functionality, using an old missionary bible and volunteer questionnaires as the source data. Although rudimentary, they put the code online as open-source to be used by others. Bonaventure has since joined with other young African computer scientists and language activists called Masakane to use this code and share knowledge to increase digital accessibility for African and other lower-resourced languages. They want to be able to communicate across the African continent using translation software, with the ultimate goal being an "African Babel Fish", a simultaneous speech-to-speech translation for African languages. James Jackson explores what role their ground-breaking software could play for societies in Africa disrupted by language barriers. A Whistledown production for BBC World Service Photo: A woman using a mobile phone Credit: Getty Images