Mobile future: Smart homes get smarter

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Last year Mobile World Congress - the annual showcase event for mobile technology held in Barcelona - hosted a mocked-up house full of mobile technology that can help around the home.

This year it has gone one step further with a ''connected city''.

The BBC's Rory Cellan-Jones talked to Markus Kristensen of the Volvo Car Group about its bespoke in-car app offering, learned about online pedal power with Adam Denton of the GSMA, and visited a house of the future put on show by AT&T.

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