BBC News - India to compile 'world's biggest' ID database
BBC News reports: "India has launched a huge national identity scheme aimed at cutting fraud and improving access to state benefits. Using biometric methods, including an iris scan, the system will log details of India's population of more than one billion people on a central database [...] The government expects to give a UID number to every Indian citizen within four years."

Comment: How long will it take to give a numbered ID to a billion people? This will be an interesting test-case to watch.