is currently Head of Telecom and Research and Development at Giesecke & Devrient, Germany. He is an experienced author, having written three editions of the book Smart Card Handbook
for Wiley (3rd
Edition published 2003), and the German version of this book for Hanser Chipkarten Anwendungen: Entwurfsmuster fur Einsatz und Programmierung con Chipkarten
which is due to publish in March this year. He has been dedicated to the development and research of smart card systems since 1990.