Dynamic Graphic Code Identity Authentication System

The patent replaces the physical plastic card with a virtual copy in the form of a graphic code (QR code or barcode) that contains encrypted identity data. This virtual card copy can be stored in mobile devices, eliminating the need for physical card manufacturing while maintaining authentication functionality. The graphic code is a simplified representation that captures the essential identity information without requiring expensive physical media.

The patent substitutes the mechanical physical card system with an electronic/digital system. Instead of using physical plastic cards with magnetic strips or chips that require card readers and physical handling, the system uses graphic codes displayed on screens and scanned by cameras or image sensors. This replacement eliminates mechanical wear, physical damage risks, and the logistics of physical card distribution and management.

The patent transforms the static graphic code into a dynamic one by incorporating time and location variables. The graphic code is regenerated based on current timestamp and geographic location data, ensuring that each authentication instance is unique. This dynamic regeneration prevents replay attacks while maintaining the simplicity of the scan-and-verify process. The code changes automatically without requiring user intervention.

The patent changes the parameters embedded in the graphic code from static identity information alone to a combination of identity information, timestamp, and location data. By modifying these parameters dynamically, the system ensures that each graphic code is valid only for a specific time and location, enhancing security while preserving ease of operation through automatic parameter updates.

The patent extracts only the essential encrypted elements needed for authentication into the graphic code, rather than encrypting and storing entire identity databases. The encryption process focuses on generating a compact cryptographic representation of identity data, timestamp, and location that can be efficiently displayed and scanned. This extraction approach minimizes computational overhead while maintaining security.

The patent applies encryption selectively to only the critical components of identity authentication data rather than encrypting all possible information. By encrypting only the necessary elements (identity identifier, timestamp, location) and representing them in a compact graphic format, the system achieves adequate security with reduced computational complexity compared to full-data encryption approaches.

The patent merges location verification, time verification, and identity authentication into a single integrated graphic code scanning process. All three verification elements are embedded in the encrypted data within the graphic code, allowing the authentication system to verify identity, time, and location simultaneously in one scan operation. This merging eliminates the need for separate verification steps and reduces overall process complexity.

The patent performs preliminary encoding of location and time data into the graphic code before the authentication scan occurs. The mobile device automatically captures current location and timestamp, encrypts them with the personal key, and embeds them in the graphic code display. This preliminary preparation ensures that when authentication occurs, all verification data is already prepared and integrated, reducing the complexity of real-time verification processing.