For the occasion, most of Barcelona's taxi cabs have been outfitted with terminals that let them accept a "tap" from a phone as a mode of payment.

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Using a packet sniffer while his device was in airplane mode, he demonstrated how each numeric tap and every received text message is logged by the software.

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Now you can tap the microphone and dictate a message even with the phone in airplane mode.

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In Creative mode, the Zoom is at the full 8X, and you can tap on the viewfinder to set the point around which the picture can be refocused.

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Text messaging on cellphones, a popular mode of interaction in emerging markets and especially India, is the route to tap into that vast market of hundreds of millions, he says.

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