A "mobile money" revolution has swept Kenya, where people can send and receive money on their cell phones. It's improved commerce and brought basic necessities to poorer areas
Tech giants like Google, Facebook, and PayPal are all steadily rolling out new-fangled services to turn our smartphones into digital wallets -- replacing cash and checks. And it's been reported that Apple is working on a new payment option to let iPhone users send money directly to one another -- as easily as a text message.
