Balancing Technology and Liberty: Forensic Science in the Age of Constitutional Rights and New Criminal Laws in India

The Indian criminal justice system is undergoing a profound transformation with the increasing integration of forensic science into investigative and trial processes. This report provides a multi-dimensional analysis of how modern forensic tools are reshaping evidence collection, evaluation, and judicial decision-making. Central to this transformation are two recent legislative reforms—the Bharatiya Nagarik Suraksha Sanhita (BNSS) and the Bharatiya Sakshya Adhiniyam (BSA)—which seek to institutionalize scientific methods of investigation and streamline evidentiary procedures. The paper examines the dual challenge these reforms face: accelerating the pace of evidence gathering while ensuring the protection of constitutional rights guaranteed under Articles 20(3) and 21 of the Constitution of India. Article 20(3) safeguards individuals from self-incrimination, while Article 21 enshrines the right to life and personal liberty, including procedural fairness. The incorporation of forensic techniques—ranging from DNA profiling to digital evidence retrieval—raises critical questions about voluntariness, consent, and the proportional use of state power. Drawing upon legal precedents, empirical research, and notable case studies, the analysis demonstrates that while forensic science strengthens the credibility of investigations, its unchecked application risks infringing upon civil liberties. Furthermore, the report identifies major implementation challenges: inadequate infrastructure in forensic laboratories, inconsistencies in procedural guidelines, shortage of trained personnel, and the absence of a comprehensive data protection framework. Unless these structural and normative gaps are addressed, the reforms risk being reduced to symbolic legislative advances rather than substantive improvements. Ultimately, the report argues that India’s move towards evidence-based policing is both necessary and timely, but its success depends on balancing efficiency with fairness. Only by embedding forensic science within a constitutionally compliant and ethically grounded framework can the criminal justice system achieve both effectiveness and legitimacy