Aadhaar World’s Largest Biometric ID System With 134 Crore Live Holders: Govt

The Indian Government on Wednesday highlighted the scale, security, and governance mechanisms of the Aadhaar ecosystem, describing it as the world’s largest biometric identity system with nearly 134 crore active users and over 17,000 crore authentication transactions completed so far, according to a statement by the Ministry of Electronics and Information Technology dated March 18, 2026.

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Also Read: Aadhaar to Embrace AI, Blockchain and Quantum Tech in Vision 2032 Roadmap

Multi-Mode Authentication Powers Service Delivery

The Aadhaar authentication service enables authorised entities to verify an individual’s identity using Aadhaar number and associated data through multiple modes, including one-time passwords (OTP), biometric identifiers such as fingerprints, iris scans and facial recognition, as well as demographic details. The service facilitates secure delivery of services across sectors.

AI-Based Face Authentication Gains Traction

The government also underscored the growing adoption of Aadhaar Face Authentication, which leverages artificial intelligence (AI) and machine learning (ML) technologies to ensure accurate and contactless identity verification.

According to the official release, entities seeking to use Aadhaar authentication services are required to be onboarded as Authentication User Agencies (AUAs) or KYC User Agencies (KUAs) in accordance with provisions of the Aadhaar Act. These agencies are mandated to retain authentication logs for two years, after which the data is archived for five years before being deleted. Aadhaar holders can access these logs for grievance redressal and dispute resolution.

Also Read: Indian Government Allows Aadhaar Face Authentication for Private Entities

Strict Data Privacy and Retention Norms in Place