Abstract: This paper presents a design and implementation of an advanced laser-based border security system aimed at detecting intrusions and enhancing surveillance capabilities along sensitive border areas. The system utilizes laser beams as invisible security boundaries, coupled with Light Dependent Resistor (LDR) sensors or photodetectors to sense interruptions caused by intruders. Upon detection, the system triggers alarms and alerts control rooms for rapid response. Integration with IoT enables real-time remote monitoring and automated alarm management. The system provides a cost-effective, scalable, and reliable method for border security with potential for operation in diverse environmental conditions.

Securing national borders against unauthorized entry is a critical challenge requiring sophisticated technology solutions. Conventional systems based on radar, ultrasonic sensors, or human patrols have limitations in cost, range, reliability, or manpower requirements. Laser based security systems offer advantages due to their ability to create narrow, invisible light beams that can cover long distances without scattering, enabling the establishment of defined security perimeters. This paper proposes a laser-based border security system that detects

The laser security system is implemented using Arduino, with sensors calibrated to distinguish between normal environmental light changes and true intrusions. IoT connectivity is established via Wi-Fi modules to enable remote access. The system also supports integration with cameras and other sensors such as ultrasonic or vibration sensors for multi-modal detection if needed

The invisible but direct laser beam ensures discreet monitoring. The system can operate continuously in various weather conditions and is scalable for large border areas. Integration with IoT allows timely alarms and remote monitoring thereby reducing manpower and enhancing security effectiveness. An additional layer of functionality is added through the GSM module, which allows for remote communication and control. The GSM module enables the system to send SMS notifications to predefined mobile numbers, informing users about door access events, unauthorized attempts, or system status updates. Moreover, it allows users to interact with the system remotely by sending specific SMS or GPRS commands to lock or unlock the door from a distance, adding a high level of convenience and control.

Downloads: | DOI: 10.17148/IJIREEICE.2025.131141