However, the apex court agreed to hear a petition filed by the Centre on the issue.
Aadhaar is a 12-digit supposedly unique number which the Unique Identification Authority of India (UIDAI) will issue for all residents.
The number will be stored in a centralized database and linked to the basic demographics and bio metric information - photograph, ten fingerprints and iris - of each individual.
The Aadhaar data collection programme is the largest biometric data collection programme in the world without any data protection law or data protection authority to provide any privacy safeguards.
Rattled by the Supreme Court ruling on Aadhaar, the Government of India is looking for statutory cover for the UIDAI, which has been operating through an executive order for the past four years after the Parliamentary Standing Committee on Finance had termed the executive decision "unethical and violative of Parliament prerogatives" in December 2011.
The Ministry of Planning had also admitted to the parliamentary panel that no committee had been constituted to study the financial implications of the UIDAI scheme and it was given a go-ahead without a detailed project report.
The Intelligence Bureau (IB) has also slammed the Aadhar and said it is not credible proof of residence.
The security establishment was severely critical of the UIDAI's introducer system where anyone with an Aadhaar number can introduce others without any documentation to get the identity number. This means that a person can introduce someone, say a terrorist, with a fake name and address.
The total number of Aadhaar issued as of Sept 16, 2013 is 425 million (42.5 crore). This is more than 35pc of the population of India. One in every three residents of India have an Aadhaar card now.
--IBNS (Posted on 08-10-2013)