IoT and Biometric Patient Health Access System

Abstract

The integration of biometric authentication and Internet of Things (IoT) technologies has revolutionized the way security and healthcare systems operate. This paper presents a Biometric Smart IoT Health Access System designed to provide secure access control and real-time health monitoring using an ESP32 microcontroller. The system integrates fingerprint-based biometric authentication, RFID technology for patient identification, and multiple health-related sensors including DHT11 (temperature/humidity), MAX30100 (SpO2/heart rate), and a vibration sensor for fall detection. Access is granted only after successful fingerprint authentication, ensuring authorized usage. Once verified, the ESP32 activates health sensors, displays readings on a 16×2 LCD, transmits data to an IoT cloud server via Wi-Fi, and triggers a buzzer for alert generation upon abnormal readings. The system enables remote monitoring through a web dashboard accessible from any internet-enabled device. Experimental results confirm successful patient authentication, real-time health data acquisition, cloud data logging, and alert generation. The proposed system is costeffective (approximately ₹4,000), reliable, and scalable for smart healthcare, elderly care, and secure access applications.