International Journal of Scientific Research and Engineering Development

The goal of this project is to design and build a comprehensive monitoring solution for corrections facilities that provides ongoing oversight and support to these residents, while simultaneously providing an accurate and timely measure of safety and health. The monitoring solution will consist of a very low power wearable device that runs off an ESP32 microcontroller, and that uses a variety of different sensors in order to gather data about an individual wearing the device. Specifically, the GPS module provides location information for tracking purposes, and a MAX30102 PPG sensor is used to measure heart rate and SpO₂ levels. In addition to providing daily care and assistance for each individual, two key security features were included in the design to provide additional protection: a Dedicated SOS switch and a geofencing algorithm. The geofencing algorithm is designed to identify when an individual has violated a designated geographical boundary and will be processed directly by the ESP32 using the Haversine formula to detect geofence violation with the highest level of accuracy. All data collected about each individual as well as any critical alerts will be sent wirelessly to a cloud-based dashboard that contains a real-time visual representation of the information and logs all alert activity. The validation tests performed on the complete project demonstrated that the average alert response time was approximately 1.7 seconds and estimated battery life of more than 50 hours was confirmed to make this a viable, reliable solution for both proactive and reactive security and wellness monitoring.

Jayaraj N, Aishwarya P, Bhoomika R, Dimpal K M, Guggulla Sai Preethi, "Prison Break Alert System with GPS and SOS With Geographic Prohibitions" International Journal of Scientific Research and Engineering Development, V8(6): Page(2850-2854) Nov-Dec 2025. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.