Workflowibayanihan
iBayanihan
A mesh-based messaging platform built with 4 other devs, using Wi-Fi Direct for secure, internet-free communication with end-to-end encryption during emergencies.
stack
- Flutter
- Supabase
- PostgreSQL
- SQLite
Architecture
- Wi-Fi Direct mesh — ad-hoc networks relay messages across multiple hops
- Hybrid peer discovery — Wi-Fi Direct service discovery plus broadcast beacons; active-scan fallback; shared routing tables for bootstrapping
- End-to-end encryption — messages encrypted locally before transmission; relay nodes cannot read content
- Group and individual chats — fully offline messaging
- Hubs — LGU and business channels with announcements, FAQs, and offline chatbot support
- Online sync — messages synced to Supabase for backup and cross-network delivery when internet returns
Results
- Internet-free communication via Wi-Fi Direct mesh
- End-to-end encryption for all messages
- LGU "Hubs" for official disaster communication and offline FAQ bots
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