This is expected to be next killer application for telcos and surely going to give Money transfer banks sleepless nights.Currently, services like Western Union charges $24 for tranfering $100 thats roughly 1/4th the amount,but using mobile transfer service like Vodafone's MPESA, it will be merely $8 and that is big difference.
M-PESA is a pilot project run by Vodafone. On similar lines, Bharti, cellular operator in India too have launched M-Wallet services and now mChek
As per figures, roughly $260 bn is transferred from migrant workers back home globally.