The absence of any reference to the "Mambo" project in bank submissions to the Senate's banking inquiry receives analysis in Banking Review Media."Me at my bank online" is a  BPay-based account portability option examined by the major banks for three years.Mambo would see individuals register for a BPay code that consumers could then port from bank to bank without the need to re-establish direct debits or credits. It could also be used to enable online payments directly from an individual's bank account.After the banks invested in early scoping, Mambo was shelved in 2008, before being revived in 2009 in response to renewed pressure from the Reserve Bank for innovation in online payments.Westpac, in its submission, cited its "active participation" in Mambo in its submission to the Senate inquiry, calling it a "modular and flexible service that expands customer choice by creating a single online payment identity that can be transferred if a customer switches financial institution."Mentions of Mambo are noticeably absent from the submissions of the other major banks, OBR noted, despite it seemingly being one remedy to the issue of account portability.The state of bank technology in relation to account numbering and the portability of bank accounts is is one of a series of measures announced by the Treasurer, Wayne Swan, in a bank policy package at the weekend.Bernie Fraser, chair of Industry Super Holdings and ME Bank, will lead the inquiry.OBR reported speculation banks aren't quite seeing eye to eye on the final scope of project Mambo, with ANZ and NAB in particular seeking changes.