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Apple CEO Tim Cook speaks in Cupertino, Calif., on Tuesday. The company unveiled a new mobile payment system called Apple Pay, which uses security built into the latest iPhones. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

The Samsung Galaxy Mega (from left), Samsung Galaxy S4 and Apple iPhone 5 are shown. Apple is expected to announce larger models of its smartphone on Tuesday. Richard Drew/AP hide caption

itoggle caption Richard Drew/AP

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Uber is hiring David Plouffe, the mastermind of Obama's 2008 campaign, to power its own political strategy. What can a tech-savvy political animal offer a ride-sharing service? Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Brooke Hammerling, the founder of Brew Media Relations, says she created her own firm because she got sick of a mix of dismissive tech guys and sexism inside some companies. Christof Stache/dpa/Landov hide caption

itoggle caption Christof Stache/dpa/Landov

Comcast CEO Brian Roberts gestures as he speaks during a cable convention in Washington, D.C., in 2013. This week, his company drew scrutiny for an agonizing customer service experience. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP