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The latest breakthrough in the cellular phone technology had opened the door to new learning possibility in Japan. Today, about 73 million mobile phones are subscribed and about 3/4 of those mobile phones are capable of browsing mobile Internet in Japan. The paper briefly explains a mobile-based learning (MBL) practice, which takes place in Japan. Also, the paper attempts to see how it differs from Web-based training (WBT) from a system designer's point of view.
Mizuki Morita (2003) studied this question.