"The DRM ebook makes a strong case for using DRM for distance learning. TV, online, mobiles (WhatsApp) have been used patchily for elearning, but radio brings something unique to the table. Being a “one-to many” platform, digital radio can deliver audio and text over vast areas and, therefore, to all the schools and students in villages far away or in busy cities, with the same content and quality and without any discrimination." (Introduction)