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The fight is on to turn your smartphone into a wallet. Who will win

With its banking and financial infrastructure still in tatters, a new mobile service that allows Haitians to make and receive payments via text message is taking off and allowing commerce to flourish. Last year, Haiti suffered a catastrophic earthquake that caused widespread devastation--a tragedy that puts yesterday's quake, which sent shockwaves of worry up and down the East Coast despite little damage, into stark perspective. The impoverished country is still recovering--but slowly, as several reports have indicated