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Nvidia Tegra 4 supercharges smartphones (hands

Now playing: Watch this: See the Nvidia Tegra 4 (and 4i) in action 2:36 BARCELONA, Spain–Nvidia’s latest mobile processor, the Tegra 4, and its little brother, the Tegra 4i, will soon be turning up in all manner of smartphones and tablets. I went hands-on with some of Nvidia’s reference devices at Mobile World Congress and found the new silicon to …

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How MasterCard plans to transform mobile purchases

BARCELONA, Spain–The hype around mobile payments is just the tip of the iceberg when it comes to the coming transformation for how people purchase goods and services. That’s according to Ed McLaughlin, chief emerging payments officer for MasterCard, who spoke with CNET about his company’s vision. While at the Mobile World Congress conference, MasterCard unveiled its MasterPass system, which addresses …

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