A technician works on a stand displaying

A technician works on a stand displaying giant barcode reading devices during preparations for the world’s biggest high-tech fair, the CeBIT on February 27, 2010 in the northern German city of Hanover. Some 4,157 companies from 68 countries are expected to display their latest gadgets at the fair taking place from March 2 to 6, 2010. AFP PHOTO DDP / NIGEL TREBLIN GERMANY OUT (Photo credit should read NIGEL TREBLIN/AFP/Getty Images)

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