Contents I. Introduction
Over the past decade, the global adoption of autonomous sensing systems has surged, driven by advancements in re-ducing power consumption and expanding wireless communication technologies [1]. This growth, particularly from an Internet of Things (IoT) perspective, has enhanced the functionality and interconnectivity of various devices through Internet connectivity. In healthcare, IoT ‗s impact is profound, revolutionizing continuous remote patient monitoring and care with smart sensor-compatible devices [2]. This technological evolution is timely, considering the demographic shifts an-ticipated by 2050, where 22% of the global population that is above 2.1 billion roughly will be over 60 years of age [3]. This age group often requires support for independent living, as many face disabilities and susceptibility to chronic diseases. In Bangladesh, around 70% of deaths are due to chronic diseases, with 80% of cases potentially avoidable if initial symptoms are detected early, and emergency assistance is provided promptly, according to the World Health Organi-zation (WHO) reports from 2023 [4]. Additionally, healthcare services in densely populated countries like Bangladesh are poorly managed, leading many lower middle-class and middle-class patients to avoid hospital visits due to issues such as hygiene, bed unavailability, service quality, transport facilities, and high expenses. Consequently, there's a growing preference for home-based treatment and monitoring, as observed in surveys in Europe and the United States, with similar trends in Asian countries like Malaysia, India, and others, utilizing mobile health applications (mHealth apps) and wearable IoT devices (smart bands) [5]–[7]. Therefore, early detection of illness and emergency medical assistance is crucial to prevent deaths, making remote real-time health monitoring a promising solution for Bangladesh.
