World's biggest high-tech fair A visitor uses a touch screen to check out cloud computing software applications at the booth of German...

World's biggest high-tech fair

A visitor uses a touch screen to check out cloud computing software applications at the booth of German company Deutsche Telekom at the CeBit computer fair in Hanover, March, 6, 2012. The biggest fair of its kind open its doors to the public on March 6 and will run to March 10, 2012. (REUTERS/Fabrizio Bensch)

Visitors are pictured at the booth of IBM at the CeBit computer fair in Hanover, March, 6, 2012. The biggest fair of its kind will run to March 10, 2012. (REUTERS/Fabian Bimmer)

A car that retracts to fit into a smaller parking space is seen at the world's biggest high-tech fair, the CeBIT in Hanover, central Germany. (AFP Photo/Odd Andersen)

Visitors inspect Blackberry mobile phones at their booth at the CeBit computer fair in Hanover, March, 6, 2012. The biggest fair of its kind open its doors to the public on March 6 and will run to March 10, 2012. (REUTERS/Fabrizio Bensch)

Staff members walk past a booth of German company Deutsche Telekom during preparations at the CeBit computer fair in Hanover, March, 5, 2012. The biggest fair of its kind open its doors to the public on March 6 and will run to March 10, 2012. (REUTERS/Fabrizio Bensch)

The CeBIT, held in Hanover, Germany, runs until Mar. 10. The fair welcomes around 4,200 exhibitors showcasing the inventions of the future, from tech behemoths such as Microsoft and Google to one-man-bands with a quirky gadget.

(Agencies)