Research Explores India's Aadhaar Privacy Safeguards Biometric authentication is a pattern-matching process that depends on the biological characteristics of humans to verify their identity. Some well-known biometric traits include fingerprints, faces, iris, retina and palm prints of individuals. In comparison to traditional token-based systems, biometric-based identification has several advantages. The Government of India (GoI) established the UIDAI (Unique Identification Authority of India) to provide unique identification to all Indian citizens. The main task of UIDAI is to generate identities for all citizens based on their biometric and demographic data.