Off-grid point to point (Not Mesh) Bluetooth Coded PHY SOS system with AES-256 encryption with a range of 1km+ all on your android phone. Fully architected and coded by Gemini 3 Pro AI.

2A-Lite is a minimal, low-cost offline emergency communication prototype using ESP32 (ESP-NOW). It supports one-way emergency messages with acknowledgements, measures round-trip latency (RTT) and packet success rate vs distance, and is intended as a reproducible undergraduate research project.

Documentation of the gap between mobile D2D capability and accessibility. Your phone can communicate kilometers without towers. It's disabled by design.

Offline communication hub for disaster relief inspired-by-piratebox- Deploy chat, file sharing, and tactical mapping on DD-WRT routers