Smart Key Biometric Authentication Across Application-Specific Key Areas

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Solution Overview

Problem

Existing smart key devices lack the ability to adapt to different authentication requirements in various application scenarios, resulting in a non-personalized user experience.

Innovation Solution

The smart key device provides multiple biometric authentication modes, including fingerprint, iris, hand shape, facial shape, and retina scanning, and adjusts authentication frequency based on user needs, ensuring personalized authentication in diverse scenarios.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single identity authentication mode is set in the smart key device, then the device structure remains simple, but the device cannot meet different authentication requirements in different application scenarios

Engineering Contradiction:
Improveauthentication mode adaptabilityVSAvoidauthentication mode complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the authentication functionality by dividing authentication modes into different key areas (first key area, second key area, third key area), each supporting different authentication methods (password, fingerprint, facial recognition, etc.). This allows the device to offer multiple authentication modes without creating a monolithic complex system, as each key area can be independently configured and managed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic authentication mode selection where the system automatically determines which authentication mode to use based on the current application scenario and key area. The authentication mode is not fixed but adapts dynamically according to the operational context, allowing the device to switch between simple and complex authentication approaches as needed.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple biometric authentication modes are provided, then personalized authentication is achieved, but the device complexity increases

Engineering Contradiction:
Improvebiometric authentication versatilityVSAvoidbiometric authentication system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by assigning different biometric authentication capabilities to different key areas based on their specific requirements. For example, the first key area may support fingerprint authentication while the second key area supports facial recognition, allowing each key area to have the specific authentication quality it needs without requiring all key areas to support all authentication modes.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent creates a universal authentication framework where a single smart key device can perform multiple authentication functions (password, fingerprint, iris, hand shape, facial shape, retina scanning) across different key areas. This multi-functionality is achieved through a unified architecture that can selectively activate different authentication modes based on the application scenario.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4050837B1Intelligent key device and verification method therefor
Publication Date: 2025.08.27 FEITIAN TECHNOLOGIES CO LTD
  • EP4050837B1 patent drawingFigure 1
  • EP4050837B1 patent drawingFigure 2

AI summary

An intelligent key device and a verification method therefor. The verification method comprises: determining the type of an instruction by means of an intelligent key device; determining a key area according to the type of the instruction; acquiring a biometric verification identifier corresponding to the key area; determining, according to the biometric verification identifier, a biometric verification mode corresponding to the key area; and executing a corresponding operation according to the biometric verification mode. According to the present invention, a user can realize multiple verification modes of biometric features according to a key area in the process of performing verification using the intelligent key device, such that different verification requirements of the user for the key used in different application scenarios are met.