The Unique Identification Authority of India (UIDAI) was established to implement the Aadhaar scheme, providing a voluntary 12-digit unique ID number linked to biometric and demographic data for all residents. Launched on September 29, 2010, the program aims to eliminate duplicate identities and facilitate access to services for the underprivileged, with projected costs around INR 18,000 crore and significant job creation potential. Aadhaar also supports direct benefit transfers to aid poverty alleviation through streamlined identification.