System and method for multi-level security in high-capacity QR codes
US12307325B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2025 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jan 8, 2045 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06037
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method are disclosed for encoding and decoding QR codes using multiple security levels through proprietary compression codebooks to increase information density and provide graduated data security. Input data is classified into public and multiple private security levels. Public data is encoded using a standard codebook while private data uses corresponding level-specific proprietary codebooks. The encoded data is combined into a single QR code with security level markers. Decoding extracts and processes each portion according to its security level using appropriate codebooks, enabling fine-grained access control while maintaining data compression benefits. The system supports complex security requirements while maximizing QR code capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.