Day Three Of Mobile World Congress 2014 [Getty Images]

An employee demonstrates how a pair of Google Glass connected glasses are capable of reading barcodes on day three of the Mobile World Congress in Barcelona, Spain, on Wednesday, Feb. 26, 2014. Top telecommunication managers will rub shoulders in Barcelona this week at the Mobile World Congress, Monday, Feb. 24 - 27, a traditional venue for showcasing the latest products for dealmaking. Photographer: Angel Navarrete/Bloomberg via Getty Images

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