*Researchers at IBM have redrawn the bus routes of Ivory Coast's largest city using mobile phone data.* The research was completed as part of the Data for Development competition run by Orange which released 2.5 billion call records from five million mobile phone users in Ivory Coast. The anonymised data is the largest of its kind ever released. Such data could be used by urban planners for new infrastructure projects, said IBM. Currently the project is just a research exercise although IBM is hoping to implement it in a number of cities. Its AllAboard project used call data which pinpoints location based on which phone mast a person is close to when he or she makes a phone call. While this data is less accurate than GPS data, it provided enough information for the researchers to conclude that the city needed to add two routes to its existing infrastructure and extend another. continua qui http://www.bbc.co.uk/news/technology-22357748 qgl