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Technology Review's Briefings are primers on key emerging technologies that promise to be transformational in their impact.

Mobile Communications

Introduction

Even in the face of a global economic meltdown, wireless technology has been an unqualified success. Energy-efficient microprocessors power mobile devices that let people share words, sounds, and images--and tap into a world of entertainment--almost anywhere. But the success of these smart phones, e-readers, and tablets challenges the telecommunications companies that must provide connectivity for a device long after the store receipt for it has been lost.

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The Big Picture Radio City

  • By Stephen Cass

There are a lot of ways to get your data fix while out and about, and even more are on the way. Because radio waves interact with the physical environment to a vastly greater degree than signals isolated within a copper or fiber-optic cable, which technology works best for you often depends on where you are.

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