Aadhaar-based authentication has become a precondition for accessing several public services and examinations. Critically evaluate the risks of exclusion this creates.

Aadhaar, the world's largest biometric identity system with roughly 134 crore holders [5], has become the de facto gateway to scholarships, DBT transfers and examinations such as NEET, JEE and CUET [3]. Its efficiency gains are real, but making identity a precondition converts every authentication failure into a denial of entitlement.

The case for Aadhaar-linked authentication

• De-duplication and accurate targeting: a single verifiable identity underpins DBT-based scholarships and welfare payments, curbing ghost and duplicate beneficiaries [4].
• Ease of access: Aadhaar enables seamless use in school admissions, entrance-exam registration and scheme delivery without repeated documentary proof [4].

Risks of exclusion

• Biometric fragility: children enrolled before age 5 have no usable fingerprints or iris records, requiring Mandatory Biometric Update at ages 5 and 15 [3]; until updated, authentication can simply fail.
• Procedural exclusion: a lapsed update can block scholarship disbursal or exam registration [4] — the child bears the cost of an administrative lapse by the household.
• Last-mile capacity gaps: about 4,000 update machines serve a nationwide drive [3], and school-based camps track children through UDISE+ [2] — leaving out-of-school, migrant and dropout children structurally invisible.
• Cost and time-bound relief: the fee waiver for the 7–15 age group runs only one year from 1 October 2025 [2]; charges outside free windows deter poorer households [4].
• Data-rights concerns: mass on-site capture of minors' biometrics must satisfy the DPDP Act, 2023 requirement of verifiable parental consent and non-detrimental processing [6].

Corrective steps under way

• Mission-mode school drive covering over 2 crore updates across ~1.6 lakh schools [1], supplemented by enrolment centres and post offices [4].

On balance, Aadhaar authentication improves targeting, but its mandatory character makes inclusion contingent on infrastructure reaching the last child. Universalising update camps beyond UDISE+-mapped schools, permitting alternative identity proofs as fallback, and making the fee waiver permanent would align the system with the constitutional promise of substantive equality under Article 14.