John Vacca (Pomeroy, OH) is an information technology consultant and internationally known author. Since 1982 Vacca has published 28 books and 370 articles in the areas of internet security, application development, programming, and the internet. He served as configuration management specialist, and computer security official for NASA's Freedom Space Station program.

• Overview of i-mode wireless technology i-mode Wireless Fundamentals i-mode Technology Using i-mode i-mode Technology Support Developing i-mode Applications Official i-mode menu sites Developing for i-mode i-mode for Business Installing and Deploying i-mode i-mode versus WAP i-mode Emulators: Testing i-mode Security The International i-mode Spectrum E-mail, SMS, Message Free, Message Request 3G Broadband Media Configuring i-mode i-mode and Java i-mode Handsets Managing i-mode Markets Overview of i-mode Markets The Japanese Cellular Market The Japanese Mobile Data Market Advanced i-mode Future Directions Future Markets Summary, Conclusions, and Recommendations