This document describes a smart and ubiquitous defense monitoring system based on the Internet of Things (IoT) that is designed to provide security for individuals. The system uses sensors like a Global Positioning System (GPS), temperature sensor, heartbeat sensor, and Passive Infrared Sensor embedded in a wearable device. When the sensors detect an abnormal heartbeat rate or increase in temperature, indicating distress, the system automatically sends alerts with the person's location to registered contacts and nearby police stations using IoT technologies like SIM800A modules and WiFi. The system is implemented using an Arduino Uno microcontroller, embedded C programming, and the Proteus simulation software. It aims to help individuals in dangerous situations by quickly notifying authorities and