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Physical cash is on its way out and won't be missed, but even in an all-digital future the option of anonymous, untraceable consumer payments must remain

President Obama's nominee for Treasury Secretary, Jacob Lew, calmly fielded three hours of sometimes hostile questions during a Wednesday hearing on Capitol Hill.

PayPal, Lenovo and other industry heavy hitters are banding together to deploy new biometric authentication tools in a bid to beat back cyber-criminals.