India's solved cases are proving that surveillance can accelerate justice, while unresolved cases are demonstrating the devastating cost of its absence. Crimes are continuing to occur in shadows on deserted roads at midnight, inside locked rooms, and in spaces where victims are crying for help but no witness is stepping forward. Investigations are stalling, perpetrators are escaping, and thousands of criminal cases across India are remaining under trial for years because of inadequate evidence. In many instances, victims and their families are spending years waiting for justice, while crucial evidence disappears before investigators can secure it. This harsh reality is repeatedly surfacing in some of India’s most sensitive criminal investigations. The Aarushi-Hemraj double murder case remains one of India’s most debated unresolved investigations, where the absence of reliable surveillance and compromised forensic handling prevented a conclusive reconstruction of events. In each of these cases, the absence or failure of surveillance did not merely delay justice; it weakened the possibility of discovering the complete truth. Traditional investigative tools are increasingly proving inadequate in a technologically evolving society. Eyewitnesses are turning hostile, memories are fading, and physical evidence is degrading over time. Preventive surveillance is therefore emerging as one of the strongest pillars of modern criminal investigation. CCTV systems, facial recognition technology, drone monitoring, and digital forensics are continuously generating objective evidence that human memory cannot reliably provide. Unlike eyewitness testimony, surveillance footage does not forget, become intimidated, or alter its version of events. More importantly, the visible presence of surveillance itself discourages criminal behaviour before offences are even committed. India's experience increasingly demonstrates the value of surveillance-backed investigations. In the Nirbhaya case, CCTV footage from roads and public areas helped investigators trace the movement of the accused and establish a precise timeline. This evidence significantly strengthened the prosecution and contributed to the convictions. Similarly, in the 2022 Sidhu Moosewala murder case in Punjab, CCTV footage provided a major breakthrough. The footage showed suspected assailants refuelling a jeep allegedly used in the crime at a petrol pump between Fatehabad and Sardulgarh. The suspects' faces were clearly visible, helping investigators advance the case. Recognising the growing importance of technology-driven policing, the Government of India is increasingly investing in large-scale surveillance infrastructure. The Safe City Project under the Nirbhaya Fund is strengthening AI-enabled surveillance and emergency response systems in major cities with a focus on women’s safety. The Crime and Criminal Tracking Network and Systems (CCTNS) is digitally linking thousands of police stations to enable faster sharing of criminal intelligence and real-time access to records. The proposed National Automated Facial Recognition System (NAFRS) aims to help identify criminals and trace missing persons through centralised facial recognition databases. Meanwhile, the Smart Cities Mission is establishing integrated command and control centres across urban areas. These centres bring together CCTV feeds, traffic data and emergency response systems on a single monitoring platform. The judiciary has also repeatedly acknowledged the growing importance of electronic evidence. In Tomaso Bruno v. State of Uttar Pradesh, the Supreme Court observed that an adverse inference could be drawn where available CCTV footage was not produced, emphasising the importance of scientific and electronic evidence in modern investigations. Similarly, in Anvar P.V. v. P.K. Basheer, the Court reinforced the evidentiary value of electronic records under the Indian Evidence Act, giving greater legal recognition to digital and surveillance-based proof. Preventive surveillance is no longer a futuristic ambition; it is becoming an operational necessity. India’s solved cases are proving that surveillance can accelerate justice, while unresolved cases are demonstrating the devastating cost of its absence. When deployed responsibly and within legal safeguards, surveillance is not becoming an instrument of fear but a framework of accountability where truth survives longer than memory and justice finds a stronger voice. (Kumar is a retired IPS officer and forensic advisor to the Assam government. Morya is Security Operations Centre Analyst.)
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