BBC News
Soutik Biswas reports from Delhi on the work of Nandan Nilekani, head of the Unique Identification Authority of India, to provide a unique identification number to half of India's billion-plus people. Since the project began in 2009, some 500 million Indians have enrolled at 25,000 centres across the country to get a 12-digit unique identification number - called Aadhaar or foundation. Some 400 million people have been already issued an ID. The goal is to enrol 100 million more people by 2014.
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