In Sub-Saharan Africa, mobile wallets are a huge deal. While it's been that way for years, the World Bank's latest Global Financial Inclusion database gives us solid details on just how prevalent they are in the region. According to the report, 12 percent of adults (64 million) in the area have mobile wallets or what Africans call "mobile money accounts," which aren't connected to banks. Half of those people have traditional bank accounts, but the half rely solely on their phones for their financial needs. It seems to be especially popular in Kenya, where 58 percent of adults access their money through a mobile device.