The book is built on academic and business research, as well as many interviews with the people who are shaping the wireless industry in Japan. Here is a short overview of the interviews  featured in the book (in chronological order):

Dr. Sachio Semmoto, Founder, Chairman & CEO, EMOBILE Ltd., Founder & Chairman, eAccess Ltd.
Takeshi Natsuno, Professor, Graduate School of Media and Governance, Keio University
Tom Moss, Head of Asia Pacific New Business Development, Google
Jun Yamada, Chairman and President, QUALCOMM Japan
Hiroshi Yoshino, President, Felica Networks
Chiaki Fujino, President, NANO Media
Dr. Keisuke Onishi, President and CEO (Co-founder), NAVITIME JAPAN Co., Ltd.
Kenji Kasahara, Founder & CEO, Mixi
Tomoko Namba, Founder & CEO, DeNA, Inc.
Brent Mori, President and Representative Director, Opera Japan
Keisuke Toji, President and CEO, Interactive Program Guide Inc.
Tetsuzo “Ted” Matsumoto, Senior Executive Vice President, Softbank Mobile Corp.

Dr. Sachio Semmoto

Takeshi Natsuno

Tom Moss

Jun Yamada

Hiroshi Yoshino

Chiaki Fujino

Keisuke Onishi

Kenji Kasahara

Tomoko Namba

Brent Mori

Keisuke TojiTed Matsumoto