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PlyQR - Dual-Channel Steganographic QR Code

Encrypt sensitive data inside standard QR codes without specialized scanners. Public scanners read ordinary data; authorized scanners decrypt confidential payloads.

100% Standard Compliant

Any standard smartphone camera or legacy barcode scanner decodes the public payload seamlessly without error or alert.

ChaCha20-Poly1305 AEAD

Military-grade authenticated encryption. Unauthorized parties cannot detect, read, or tamper with the covert payload.

Dual-Carrier Steganography

Combines post-terminator padding embedding and Reed-Solomon parity differential modulation for optimal capacity and noise tolerance.

Zero External Hardware Lock-in

Pure cryptographic and mathematical implementation in Rust. Runs in browser WASM, Cloudflare Workers, Node.js, and embedded systems.