Mobile money exploded in East Africa through the launch of M-Pesa, a phone-based money transfer service founded in Kenya fifteen years ago. Despite policy and funding challenges, markets in West Africa such as Senegal and Côte D'Ivoire now seem poised to experience their own boom through wider mobile money adoption. In tomorrow's Quartz Africa Member Brief, we look at fintech startups providing services to the unbanked and examine the region that could be the next digital money giant in Africa.