Books and magazines:
i-mode Developer's Guide book
[ http://www.imode-guide.com/ ]
The premiere source of information in English on technology trends in Japan, including a weekly wireless update -- not to be missed!
[ http://www.japaninc.com ]
"Mobile Content Providers and their Business Models: What can Sweden learn from the Japanese experience"
- Thesis by A. Devine and S. Holmqvist
[ http://www.japaninc.com/online/sc/master_thesis_as1.pdf ]
"CJKV Information Processing"
The bible of Japanese text handling by Ken Lunde
[ http://www.praxagora.com/lunde/cjkv-ip.html ]
Keitai-L mailing list
An excellent mailing list for topics involving mobile and wireless applications and services in Japan. Have a question about i-mode development? If so, search the postings from the past 3 years, look through the FAQ, or post your own questions or comments to the list.
[ http://www.appelsiini.net/keitai-l/ ]
Mobile Media Japan
[ http://www.mobilemediajapan.com ]
Wireless Watch Japan
The only independent English-language media focusing exclusively on the business of wireless in Japan. Host Daniel Scuka, co-author of i-mode Developer's Guide and senior contributing editor at J@pan Inc magazine, interviews the people in the know about i-mode, photo and video mail, 3G, DoCoMo, FOMA, i-Appli J2ME Java, iMelody ringtones, and much more.
[ http://www.wirelesswatchjapan.com ]