MO-DI-FI: Alternative Communication Application for Search and Rescue Operation using Wi-Fi Direct Technology
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Abstract
This study developed MO-DI-FI, an Android-based alternative communication system for search and rescue operations utilizing Wi-Fi Direct technology. The project aimed to address the lack of reliable communication during disasters, particularly in Sultan Kudarat, by enabling real-time peer-to-peer voice communication and GPS tracking without requiring internet access. Using a constructive research method, the system was iteratively designed, developed, and tested in collaboration with the Provincial Disaster Risk Reduction and Management Office (PDRRMO). The application consists of three modules: Rescuer, Stranded User, and Admin. Key findings demonstrated that the system effectively supports device discovery, offline voice communication, and location sharing. Despite limitations such as range constraints and device compatibility issues, the application significantly enhanced communication efficiency during simulated rescue operations. Furthermore, the system allows rescue data to be collected and stored offline during field operations, which can later be synchronized, reported, and visualized through the admin dashboard once an internet connection becomes available. The contribution of MO-DI-FI lies in its ability to provide offline, real-time, and structured communication support for disaster response teams operating in areas without network connectivity. Future research is encouraged to focus on expanding cross-platform compatibility and optimizing outdoor signal relay capability to further enhance its effectiveness in disaster scenarios.
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