For the 'unbanked', mobile money still has some way to go

Globally, an estimated 2.5 billion people don't have a bank account, but many own a cellphone, fuelling a race to turn these phones into bank books for the 'unbanked' to store cash, manage their accounts, make purchases and send and receive money - part of so-called 'financial inclusion'.

In a report this week, the GSMA, the association of mobile phone companies, said mobile money "has been growing at a dizzying rate." The Boston Consulting Group said last month mobile money transfers in sub-Saharan Africa alone could generate fees of up to $1.5 billion by 2019.