ChatFunky: An Offline Bluetooth-Based Encrypted Chat Application for Disaster Communication.

  • Unique Paper ID: 187323
  • PageNo: 4712-4715
  • Abstract:
  • A solid way to stay in touch matters a lot these days. But when storms hit or networks go down, regular online methods usually stop working - leaving folks cut off from help and each other. Our project brings forward ChatFunky, an Android app that lets users exchange private messages directly through Bluetooth, no internet needed. It works completely offline, allowing close-by phones to send coded texts by linking via wireless signals instead. All messages stay on the device, locked down with AES-256 GCM encryption - powered by Android’s Jetpack Security tools. Built to run smooth without slowing your phone, so it works even off-grid or after disasters hit. Tests across many Android phones checked how well ChatFunky handles steady links, sending texts, strong encryption, and saving battery life. This setup shows Bluetooth, when paired with up-to-date security methods, can give a solid private chat option during emergencies. Coming updates aim to add photo sharing, multi-person conversations, plus longer reach using Bluetooth mesh networks.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{187323,
        author = {Mandar Joshi and Dr. Juita Raut},
        title = {ChatFunky: An Offline Bluetooth-Based Encrypted Chat Application for Disaster Communication.},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {6},
        pages = {4712-4715},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=187323},
        abstract = {A solid way to stay in touch matters a lot these days. But when storms hit or networks go down, regular online methods usually stop working - leaving folks cut off from help and each other. Our project brings forward ChatFunky, an Android app that lets users exchange private messages directly through Bluetooth, no internet needed. It works completely offline, allowing close-by phones to send coded texts by linking via wireless signals instead. All messages stay on the device, locked down with AES-256 GCM encryption - powered by Android’s Jetpack Security tools. Built to run smooth without slowing your phone, so it works even off-grid or after disasters hit. Tests across many Android phones checked how well ChatFunky handles steady links, sending texts, strong encryption, and saving battery life. This setup shows Bluetooth, when paired with up-to-date security methods, can give a solid private chat option during emergencies. Coming updates aim to add photo sharing, multi-person conversations, plus longer reach using Bluetooth mesh networks.},
        keywords = {Offline Communication, Bluetooth Chat, Disaster Response, Encrypted Messaging, Android Application, AES Encryption, Jetpack Security, Mesh Networking.},
        month = {November},
        }

Cite This Article

Joshi, M., & Raut, D. J. (2025). ChatFunky: An Offline Bluetooth-Based Encrypted Chat Application for Disaster Communication.. International Journal of Innovative Research in Technology (IJIRT), 12(6), 4712–4715.

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