Abstract: The increasing frequency of ATM-related crimes, including theft, vandalism, and unauthorized access,
necessitates the development of advanced security solutions. This paper proposes an IoT-enabled Smart ATM Security
System that integrates an ESP32 microcontroller, GSM module, IR sensors, touch sensor, motor driver with DC motor,
LCD display, buzzer, and battery backup. The system employs multi-layered security: IR sensors monitor human
presence near the ATM entrance, the touch sensor detects tampering attempts, and the GSM module provides real-time
SMS alerts to bank authorities. A motorized door mechanism ensures restricted access, while an LCD display
communicates system status. The design was implemented using Arduino IDE and Embedded C programming.
Experimental testing under various scenarios demonstrated rapid response time, high reliability, and uninterrupted
operation during power failures. The proposed system offers a cost-effective, scalable, and efficient solution for ATM
security.

Keyword: Smart ATM Security System, IoT, ESP32, GSM, IR Sensor, Touch Sensor, Motor Driver, Real-Time Alerts

Downloads: | DOI: 10.17148/IJIREEICE.2025.13824