Facial recognition technology in policing straddles the line between legitimate state interest and mass surveillance. Critically examine with reference to recent Supreme Court scrutiny.

Facial Recognition Technology (FRT) matches faces captured in public spaces against police databases. Its policing use sits uneasily between the State's duty to maintain order and the citizen's right to privacy affirmed in K.S. Puttaswamy v. Union of India (2017) [1]. Recent Supreme Court scrutiny of its deployment during protests makes this balance a live constitutional question.

The case for legitimate state interest

• Investigative efficiency: FRT enables rapid identification from digital images, video frames and existing records, aiding crime detection where manual identification fails.
• Institutional backing: the National Automated Facial Recognition System (NAFRS), developed by the NCRB under the Ministry of Home Affairs, links to CCTNS databases for pan-India criminal identification [2].
• Narrow official justification: before the Supreme Court, Delhi Police defended its use during the NEET-UG paper leak protests as a "legitimate state interest" aimed at identifying "hardened criminals and not ordinary people" [3].

The case against — the mass-surveillance risk

• Absence of a dedicated statute: no FRT-specific law defines purpose limitation, retention or oversight; police rely on general policing powers.
• Data with private entities: petitioners argued FRT data is stored by private players, engaging obligations under the Digital Personal Data Protection Act, 2023 [4].
• Chilling effect on assembly: identifying peaceful protesters can deter the exercise of Article 19(1)(b) rights.
• Accuracy and bias: error rates are higher for women, minorities and marginalised groups, risking wrongful identification.

Judicial scrutiny as the balancing device A Bench headed by the Chief Justice agreed to test the "proportionality" of Delhi Police's use of the technology, framing it as a calibrated review rather than a direct Article 21 challenge [3]. This applies Puttaswamy's test of legality, necessity and proportionality to an operational policing decision [1].

FRT is neither inherently illegitimate nor safely unregulated; its constitutionality turns on whether each deployment is the least intrusive means to a defined end. A statutory framework specifying authorisation, retention limits, audit and independent oversight — coupled with judicially settled proportionality standards — would let India harness the technology's security benefits while safeguarding privacy and dissent as Puttaswamy envisaged.