Digital Surveillance Between Spouses: Privacy, Consent, and Matrimonial Litigation

This Blog is Written by Priyam Pratik, 2nd Year, B.A. LL.B. (Hons.), Faculty of Law, Main Campus, University of Allahabad, Prayagraj.

Blog 10 | Edition VIII

Introduction

A marriage that once kept its secrets in locked drawers and overheard phone calls now keeps them in cloud backups, location histories, and message threads. The same intimacy that once made spouses confide in each other now makes them uniquely capable of watching each other, and Indian courts are increasingly asked what to do when one spouse turns that capability into surveillance. Reading a partner's WhatsApp messages, installing tracking applications on a partner's phone, or accessing a partner's email without permission have begun appearing in matrimonial litigation, not as side issues but as central evidence in cases of cruelty, adultery, and divorce. The law has not caught up with the intimacy of modern surveillance, and the result exposes a deeper tension between two values courts are reluctant to fully sacrifice for each other: marital trust and individual privacy. The starting point for any analysis is the right to privacy itself, which the Supreme Court placed firmly within Article 21 in the landmark Puttaswamy decision. That ruling made clear that privacy is not a privilege extended by the state but an inherent dimension of personal liberty, one that does not disappear because a person enters into marriage. Yet marriage has always complicated the boundaries of privacy in ways the law struggles to define cleanly. Spouses share homes, finances, and often digital devices, and the law has traditionally tolerated mutual access that would be unthinkable between strangers. The difficult question is not whether spouses have privacy rights against each other, but where the line falls between the ordinary intimacy of marriage and an intrusion serious enough to count as a violation.

Surveillance as Evidence: The Admissibility Problem

Indian courts have approached this question primarily through evidence law rather than privacy doctrine, and the results have been inconsistent. The foundational difficulty is that Indian evidentiary rules, unlike some Western jurisdictions, do not generally exclude evidence merely because it was obtained illegally or without consent. The Supreme Court's reasoning in such cases has generally favoured relevance over the manner of procurement, meaning a recording obtained through covert surveillance is not automatically inadmissible simply because the method used was unlawful or invasive. This has created an unusual incentive structure in matrimonial disputes, where a spouse gains little by respecting the other's privacy and potentially a great deal by violating it, since the resulting evidence may still be used in court even if extracted through intrusive means. At the same time, several High Courts have pushed back against unrestrained surveillance, particularly where it involves covertly recording private conversations or accessing a spouse's personal devices without knowledge or consent. The Punjab and Haryana High Court, in a widely discussed ruling, held that secretly recording a spouse's phone calls without consent amounted to a breach of the fundamental right to privacy, and refused to allow such recordings to form the basis of evidence in a divorce proceeding. This reasoning treats the marital relationship as one that does not extinguish an individual's expectation of privacy, even from a spouse, signalling growing judicial discomfort with surveillance tactics earlier courts may have tolerated as ordinary incidents of marital conflict.

Consent and the Limits of Implied Access

Much of the difficulty here stems from the ambiguity of consent within a marital relationship. A spouse who shares a phone's passcode for convenience has not necessarily consented to having every message, photograph, and location record reviewed by the other. Courts have generally been reluctant to treat the mere existence of access, such as a shared device or known password, as equivalent to consent for surveillance, recognising instead that consent must be specific to the act in question rather than inferred from general domestic proximity. This distinction matters in practice, since most digital surveillance between spouses occurs precisely because access already exists, often from a period when the relationship was functioning normally, and is later repurposed for monitoring once suspicion arises. The shift from incidental access to deliberate surveillance is where the legal character of the conduct changes most sharply, even though the underlying act may look identical from the outside. The rise of spyware applications marketed for monitoring a partner has sharpened this problem considerably. Unlike casually reading a message left open on a shared device, installing tracking software involves a deliberate, often sophisticated act of surveillance that operates continuously and covertly, capturing far more than any single instance of incidental access could. Indian law has no specific statute addressing spousal surveillance through such tools, leaving the issue to be addressed indirectly through provisions of the Information Technology Act dealing with unauthorised access to computer systems, though these were drafted with external hacking in mind rather than domestic surveillance, and their application to spousal disputes remains largely untested.

The Way Forward

What is needed is not a wholesale exclusion of digital evidence from matrimonial litigation, since such evidence can be genuinely probative in establishing cruelty, infidelity, or financial concealment, but a clearer framework for distinguishing legitimate evidence from the product of unacceptable surveillance. Courts could draw a line between evidence obtained through access a spouse already had and reasonably understood to be shared, such as a joint email account used for household matters, and evidence obtained through covert installation of monitoring software or deliberate circumvention of security measures the other spouse had put in place. The former might reasonably remain admissible; the latter should attract far greater scrutiny, both as to admissibility and as to whether the surveillance itself constitutes cruelty actionable independently of the evidence produced. Legislative clarity would help considerably, since relying on inconsistent High Court rulings leaves both spouses uncertain about what conduct is permissible. A statutory framework addressing digital privacy within marriage, perhaps as an extension of existing data protection legislation, could specify that installing surveillance software on a spouse's device without explicit consent constitutes both a civil wrong and a relevant factor in matrimonial proceedings, while leaving room for courts to weigh genuinely shared digital spaces differently. Until that clarity arrives, Indian matrimonial law will keep producing the same uncomfortable pattern, where the breakdown of trust that drives a spouse toward surveillance becomes the justification courts are asked to overlook to admit what that surveillance uncovered.

(Write to the author at priyampratik34@gmail.com.)