Shinjuku Japanese Language Institute, authorized by the Tokyo metropolitan government was established in 1975. The school uses the Ezoe method, a style of teaching developed by the schools president Takahide Ezoe. Using this method the school has developed a series of effective teaching materials including study guides and CD ROMs. Of the new materials developed recently Shin Jitusyo Nihongo 1 has attracted most attention as the worlds first speaking textbook. The book makes use of Scan Talk, a system developed by Olympus Optical Co. that produces sound from printed data. Using the Scan Talk reader, students scan the bar codes on the pages and are able to listen to a spoken version of the texts and dialogues. The textbook is published in colour. Grammar topics are organized according to a colour code to make them more understandable.