What struck me here as interesting is that the Yahoo username and password provides access to account information.  I cannot imagine our information security people permitting that, and for good reason.  I can see enormous phishing potential ramping up against Net Bank.

Tokyo-based Japan Net Bank is offering its customers cell phone banking services through a partnership with new investor Yahoo! Japan. The announcement follows news earlier this week that Yahoo! had acquired a 40% stake in the bank for $218 million.

Accountholders can use their Yahoo usernames and passwords to access their accounts.

Source: BankNet 360 – Japanese Bank Rings in Mobile Banking