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World's smart cities

Barcelona: Barcelona, the second largest city in Spain, has efficient bus routes, a sensor-powered rubbish collection system, smart street lights and is in the process of developing unique contactless payments across public transports. A centralised operating system meant to bring all the systems together is also being developed in this city.

World's most futuristic cities

A number of international capitals are leaders in using 'smart' technologies--citywide high-speed Internet access, for example--to improve the lives of their citizens. A recent BBC report lists the 10 innovative cities that have leapt most boldly into the future.