Want to get some cash at automated teller machines in Nairobi? Don’t be surprised by the guards with machine guns. ATMs attract plenty of muggers and pickpockets.  Unsurprisingly, cashless transactions have been catching on fast in Nairobi and elsewhere in Africa. Microfinance organisations were among the pioneers. In Kenya, for instance, they started using M-PESA, the popular mobile money service, to hand out loans to small-time businesspeople in 2008, soon after its launch.  Article