nanaco availabe all over Japan
Nanaco is yet another RFID emoney system (like Suica and Edy) introduced by Seven Eleven Japan about a month ago. There are already over 1 million Nanaco users. It had been available only in big cities until recently, but, since May 28, all Seven Eleven stores in Japan accept Nanaco payment.
Speaking of cutsiness of digital money, I give Nanaco two thumbs up.
Original Source: RFID in Japan
Dr. Shin'ichi Konomi has been RFID in Japan's contributor since April of 2004. He received his Ph.D. from Kyoto University, Japan and was a postdoctoral research scientist at Fraunhofer IPSI, Germany. He has been building and testing various ubicomp applications using RFID since 1998. Shin'ichi often collaborated with his colleagues in Japan, co-organizing International Workshops on RFID (2004) and playing a role as a liaison for ALAN-K Project, an international project for introducing a new computer-supported learning environment for Japanese kids (2002). He also writes articles on technology and media arts in Japan for we-make-money-not-art.com.