Messages and e-mail are full of emoji, a means of communication that was invented in Japan. Emoji debuted in the 1990s as a way to add emotion to messages on a small screen, and people found they were a great tool for maintaining smooth interaction. This time on Japanology Plus, our theme is emoji, now indispensable to digital messaging in Japan. Our expert guest is Matt Alt, the regular Plus One reporter who is also the author of a book on emoji. And in Plus One, we look at the creative world of Japanese emoticons.