Not satisfied with the pace of enrolment for Adhaar number, Delhi chief minister Sheila Dikshit on Wednesday asked chairman of Unique Identification Authority Nandan Nilekani to expedite the process in the city.

In a meeting with Nilekani, Dikshit expressed her unhappiness in slow progress in enrolment for Adhaar numbers and asked him to take steps in removing the hurdles.

"I explained about the slow progress in the enrolment for the Adhaar numbers. We need to expedite the process," she said when asked about the meeting.

Officials said five private agencies were hired last year to collect bio-metric data and registration of citizens for issuance of Adhaar numbers. But the progress of data collection and enrolment were not satisfactory.

Aadhaar is a 12-digit number which the Unique Identification Authority of India (UIDAI) is issuing for all residents in India.

The UIDAI is storing basic demographic and biometric information - photograph, ten fingerprints and eye scan - of each individual, being issued the number, in a central database.

The Delhi government plans to use the Adhaar database to identify actual beneficiaries for various schemes and plug the loopholes in the PDS as well as in implementing some other schemes.

Officials said thousands of residents have not received adhaar numbers months after enrolment for the same.