Show HN: A file transfer protocol for after the internet dies

Category: infrastructure

Tags: file-transfer, qr-code, offline-communication

Score: 6.3/10 (Innovation: 8, Technical: 7, Documentation: 6, Utility: 4)

This project implements a file transfer protocol that uses two webcams and QR codes to exchange files when traditional networking is unavailable. It combines sliding-window reliability, ECDH key exchange, and fingerprint verification in a novel way, making it interesting for extreme offline scenarios.

Target audience: security researchers, backup engineers, apocalypse preppers

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