The article focuses on the use of mobile devices to support printed books in learning. It suggests that compared to mobile technologies, traditional distance education technologies such as television and radio are limited in mobility and the lack of interaction opportunities between learners and teachers. It mentions that disadvantages of mobile learning devices include small screen size and keypads, along with reduced effectiveness and performance when scrolling through text-intensive information on a small screen. It talks about the use of 2D bar code technologies to allow easy use of multimedia content such as audio, video, and pictures to support learning from printed textbooks..