A recent article in the European Medical Journal (EMJ), published on January 16, 2026, delves into the significant role of wearable technology in understanding sleep and long-term care routines, particularly for individuals with advanced dementia. The research highlights how these devices can capture detailed rest-activity rhythms, offering crucial insights into patterns often disrupted in dementia patients. Such disruptions are strongly linked to compromised safety, reduced quality of life, and increased burden on caregivers. The article also identifies 'Six Rest-Activity Phenotypes Linked to Symptoms,' suggesting a deeper understanding of how these physiological markers correlate with the progression and management of dementia. This perspective promotes a shift towards 'Data-Driven Dementia Care,' where personalized interventions can be developed based on real-time health data. Beyond this specific study, broader research consistently corroborates the immense potential of wearables in elder care. These devices facilitate continuous health monitoring, tracking vital signs like heart rate, blood pressure, and oxygen levels, alongside activity and sleep patterns. They offer critical features such as fall detection and provide personalized health insights, empowering seniors to maintain independence and allowing caregivers peace of mind through remote monitoring. While offering substantial benefits, challenges like battery life, complex interfaces, cost, and privacy concerns need addressing for wider adoption. The EMJ itself is a credible, peer-reviewed publication indexed in reputable databases like DOAJ and Google Scholar, ensuring the scientific rigor of its content. This global trend of integrating technology into elderly care holds significant relevance for countries like India with rapidly aging populations.