'Mobile money' has been a game-changer in developing countries, but it may not be serving those who need it most

Since its emergence in the late 2000s, "mobile money," a form of digital currency, has been a game-changer throughout the developing world for people with little savings and no access to formal banking systems. Even in rural areas of Africa and Asia, local agents representing large mobile telephone operators offer a secure, inexpensive way to store or transfer money instantly over great distances using only a phone.