The Infosys co-founder Nandan Nilekani-headed Unique Identification Authority will utilise the existing data available with government departments such as Income Tax and state fuel retailers for rolling out the unique identification cards for the countrys citizens. Nilekani,who is yet to officially take over,met petroleum minister Murli Deora on Tuesday and saw synergy in the huge data base available with the public sector oil companies that service 110 million LPG customers and have vast information on BPL families buying PDS kerosene. We will cooperative very closely with the petroleum ministry, he told reporters after the one-hour long meeting. Deora said the huge database of petroleum products such as LPG customers with oil marketing companies will be useful in covering a large part of the population. Nilekani said the oil sector data of LPG consumers is a huge attraction and resouce towards accomplishing the task in his hand. The authority may also use the data of PAN card applicants available with the Income Tax Department for the initial build-up of a resource base.