The Institute for Money, Tecnhology and Financial Inclusion has generated a list of 11 Design Principles for Financial Services for the Poor, drawn from a cohort of 20+ research projects around the world:
Download the principles here.
The IMTFI is funded, in part by the Bill & Melinda Gates Foundation and in 2010 is set to more than double the number of projects around the globe. Full disclosure: I’m on the IMTFI external advisory board.