Pushing global online finance to the next level using corporate venturing and more open innovation at one of the world's largest banks.

When even a former chairman of the US Federal Reserve says "the only useful banking innovation was the invention of the ATM [automated teller machine in the 1970s]" then the financial services industry has probably been castigated from all sides.

Paul Volcker might have given his example of the ATM as a way of criticising the complex financial products brought out before the financial crisis started in 2007, but Citigroup, the bank that pioneered the "hole in the wall"…