Forbes.com informs us that Japanese Edy e-money transactions reach 10 mln in June. This outlines a general trend in Japan. Also competitor Suica is achieving critical mass.
The secret to this success is being able to top-up e-money from your bank towards the e-money storage on the phone. And the stuff is contactless at the point of sale. Which is also good for consumers. Interestingly though users that want to top up may need use their bankPIN on the mobile phone. Which appears to be somewhat risky if the PIN is the same as the PIN for the bankcard...