The Kerala Infrastructure and Technology for Education (KITE) has launched audio books for all students, with a special emphasis on visually challenged children, an official said. KITE has also released audio books and sign language adapted classes of revision portions highlighting on the focus areas for classes 10 and 12 for the annual examination, as part of its 'First Bell' Digital Classes aired through the KITE VICTERS educational channel. K. Anvar Sadath, CEO, KITE said all revision classes in audio books shall be heard in an enjoyable way like listening to a radio programme and are easily downloadable and shareable in mp3 format and this is the first such module in the country in the general education sector.