Yacine Ait Kaci is a French author, an artist and a movie director born in 1973. Graduated from the National School of Decorative Arts, he began his career with multimedia realizations (designer of the Louvre DVD-ROM, subjects for the TV show Archimède on Arte Channel). In 2000, he has created with the architect Naziha Mestaoui the Electronic Shadow label, group working on technological and artistic innovations (invention of video mapping and Grand Prix at the Japan Media Art Festival). In 2011, he has created the little virtual character Elyx, ambassador of benevolence and humanism, ecology and optimism. with more than 120000 subscribers on Instagram, Elyx is invited everywhere (books, shows, official calendar, COP21, generics of movies, by-products) and becoming in 2015 the first digital ambassador of the United Nations, he went on a journey to promote the sustainable development processes. Between 1996 and 2006, Yacine Ait Kaci has taught and given conferences at the Arts schools of Amiens and Reims, at the ATEP, at the Sorbonne as well as in numerous international institutions.