It’s 3:47 a.m., and your smartwatch knows you are asleep. It records the rising heartbeats, your shifts in sleep, and the moment when your sleep is interrupted. By the morning, it gives you detailed information about your sleep and labels it as ‘disturbed’. It suggests ways to improve it, and it almost seems helpful and caring. But a deeper reality lies beneath it, the data travels from the watch to the phone, phone to the distant servers, a part of system that records, interprets, and detects you, your health and your body, it recognizes you not just as a user, but as a pattern.
That raises a question we rarely ask: Who else is listening to our body?
Wearable health technology is designed to feel personal and in control over our data, our health and our body, to make us feel that it entirely belongs to us. The sense of ownership, of what feels personal, in many ways, is shared. The feeling of privacy is often processed far beyond our view and our knowledge. The smartwatch resting on our wrist may feel harmless, make us
feel normal about calculating our sleep cycle, every step, every heartbeat, measuring blood pressure and detecting irregular sleep patterns but these harmless looking devices are generating a vast amount of personal data. These wearables gather information over a long period of time. When these all-small bits of data collected are combined, we see the detailed pattern that reveals daily routines, stress response, changes in both physical and
emotional states. It gradually becomes a comprehensive digital profile of an individual. The data gets uploaded to cloud-based platforms and is often transferred to third-party applications or
service providers. This whole procedure is invisible to users and keeps us unaware about what’s happening behind the closed doors. Each stage of this process is an introduction to vulnerabilities, from weak encryption to unprotected system storage. The wearables now don’t monitor your health but interpret patterns making it a tool into system capable of understanding and anticipating human behaviour. This does have a significant benefit but at the same time it raises concern about how these insights are used or maybe used.
Now you might be wondering-what’s the risk in sharing your step count or heart rate?
Health data is among most valuable and sensitive forms of personal information. When it’s analyzed and studied it as pattern it becomes a powerful resource. Companies can use this data to improve their services and make users’ experiences more personalized. But the concerns are still
rising after many real-life incidents, the global fitness app, Strava, revealed sensitive military information in January 2018 when it published an updated ‘Global Heatmap’ that visualized data from its users’ activity trackers. The map inadvertently exposed locations, perimeter, and patrolling patterns of US and
allied military bases, as well as CIA outposts in some countries. Wearables don’t just track health-they create records that can be used in unexpected ways. But there are real cases where Apple watch detected irregular heart rhythms or falls and alerted users or emergency services, potentially saving lives. Above all this, a key challenge lies in the concept of informed consent. most users agree to give access to data rarely reading or fully understanding the length privacy policy. This creates an illusion of control, where users believe they are aware of how their data is used, while in reality, they may only understand a fraction of it.
Despite these concerns, wearable health technology is growing in popularity. The benefits are clear: increased health awareness, early detection of potential issues, and accessible monitoring tools that blend easily. People often accept the trade-off between convenience and privacy without much thought, mainly because the risks are not clearly visible. As we look ahead, wearable health technology is expected to become even more sophisticated. With AI integration these devices will soon predict illnesses, monitor mental health, and offer personalized recommendations.
While this marks a significant advancement in healthcare, it also raises concerns about the amount and sensitivity of the data being collected. Users need to understand not only what their devices do but also what data they collect and where that information goes. At the same time, companies must prioritize security, transparency, and responsible data practices. Building trust requires more than innovation. It requires accountability, confidentiality and integrity. It provides convenience, insights, and the promise of a healthier future. Yet, it also challenges our understanding of privacy in a connected world. In a world where your body can be translated into data, the real question is no longer what technology can do for you—but what it quietly learns about you in return.
By: Abhipsa Patra
BCA(2025-2029)