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Identical twins pose rare biometric challenge for Aadhaar registration

Twin sisters in Uttar Pradesh's Rampur district faced enrollment complications after their biometric data—retina scans and fingerprints—were found to be identical, creating a duplication issue in the Aadhaar system.

LSN India · 23 September 2026

Identical twins pose rare biometric challenge for Aadhaar registration

A case of biological rarity has emerged in Rampur, Uttar Pradesh, where identical twin sisters encountered difficulties updating their Aadhaar records due to matching biometric identifiers. During a routine Aadhaar update, officials discovered that the twins' retina patterns and fingerprints were indistinguishable, triggering the system's duplication protocols.

The biometric conflict created a procedural impasse wherein updating one twin's Aadhaar profile would automatically result in the rejection of the other's application. The system's safeguards against duplicate identities, while essential for database integrity, were unable to accommodate the exceptional circumstance of genetically identical biometric markers.

The issue compounded when the family attempted to register the twins for their 10th standard examinations, with educational institutions requiring valid Aadhaar documentation. Facing mounting administrative obstacles, the family escalated the matter to the District Magistrate's office seeking intervention and resolution.

The case underscores the challenges that arise when biometric identification systems encounter rare biological phenomena. While Aadhaar's duplication-prevention mechanisms are designed to ensure data integrity, the scenario of truly identical twins presents a genuine edge case that existing protocols may not adequately address. Authorities are expected to review the matter and establish precedent for similar situations.