What is Epsilon Pi Tau Epsilon Pi Tau (EPT) is the Leading International Honor Society for Technology. Epsilon Pi Tau recognizes academic excellence of students in fields devoted to the study of technology and the preparation of practitioners for the technology professions. Epsilon Pi Tau also extends the honor of membership and advancement activities to outstanding practitioners in the technology professions, scholars with exemplary research interests in technology in society and/or persons who have significantly supported or advanced technology professions. All prospective members from these groups must meet Epsilon Pi Tau professional and leadership performance criteria.