Rio: Latin America's first 'smart city'?
9 September 2013 Last updated at 02:07 BST
As well as playing host to the World Cup and Olympics, Rio de Janeiro has ambitions to become Latin America's first smart city.
From the operation centre into which data from 900 cameras around the city is fed, to the famously chaotic favelas, technology is playing a role in improving the lives of citizens.
Jane Wakefield reports.