Non-contact Palmprint Authentication Using Supplementary Lighting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional user identity authentication methods on mobile terminals face a contradiction between security and convenience, with existing solutions like passwords, fingerprint authentication, and facial recognition being either insecure or inconvenient, and requiring additional hardware, which increases costs and complicates design.
Innovation Solution
A non-contact palmprint authentication method and device using a built-in camera and lighting lamp on mobile terminals, enabling supplementary lighting and real-time image processing to capture and match palmprint images against pre-recorded benchmarks, without the need for specialized hardware or fixed positioning, thus improving image quality and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional password or username/password authentication is used, then security can be improved by setting complicated passwords, but convenience deteriorates due to complex password requirements and multiple authentication steps
Solution Approach 1:
The patent replaces traditional mechanical/password-based authentication systems with a biological feature-based authentication system using palmprint recognition. Instead of requiring users to remember and input complex passwords, the system captures and recognizes unique palmprint patterns, substituting manual password entry with automated biometric verification that maintains high security while significantly improving user convenience
Solution Approach 2:
The patent changes the authentication parameter from artificial passwords to biological palmprint features. By utilizing the unique physiological characteristics of palmprints (ridges, valleys, minutiae points), the system transforms authentication from a memory-based task to an automatic recognition task, resolving the contradiction between security and convenience
2Ease of operation
If fingerprint authentication is introduced to improve convenience, then authentication convenience is improved, but security deteriorates because fingerprints are easily collected and used by others
Solution Approach 1:
The patent addresses the security vulnerability of fingerprint authentication by switching to palmprint authentication. While both are biometric features, palmprints are significantly harder to collect, replicate, and forge compared to fingerprints. The system converts the potential harm of easy biometric replication into benefit by selecting a biometric feature (palmprint) that is inherently more secure while maintaining the convenience of contactless or minimal-contact authentication
Solution Approach 2:
The patent utilizes the uniqueness and difficulty of copying palmprint patterns compared to fingerprints. While fingerprint replication is relatively easy, palmprint replication requires high-resolution contactless scanning and complex processing, making unauthorized copying practically impossible. This principle allows the system to maintain convenience while dramatically improving security
3Adaptability or versatility
If fingerprint identification hardware is added to support fingerprint authentication, then authentication functionality is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent achieves authentication functionality using the mobile terminal's existing camera and display components, which are already present for other functions like photography and user interface display. By utilizing these multi-functional components for palmprint capture and presentation, the system eliminates the need for dedicated fingerprint sensor hardware, reducing device complexity while maintaining authentication versatility
Solution Approach 2:
The patent enables the mobile terminal to perform authentication using its own existing resources (camera for image capture, display for showing captured images). The system serves itself by utilizing components already designed for other purposes, eliminating the need for additional specialized authentication hardware and thereby reducing overall device complexity
4Adaptability or versatility
If fingerprint identification hardware is added to support fingerprint authentication, then authentication functionality is improved, but development and designing cost increase
Solution Approach 1:
The patent leverages the mobile terminal's existing camera and display hardware for palmprint authentication, allowing these components to serve multiple functions (photography, user interface, and biometric authentication). This approach eliminates the need for additional specialized authentication hardware, thereby reducing development costs, simplifying manufacturing processes, and avoiding the need for separate supply chains for fingerprint sensor components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the quality and convenience of palmprint authentication, reducing development costs and complexity while providing a secure identity verification mechanism that is less susceptible to unauthorized access compared to traditional methods.
Implementation Method 1
a collection control unit configured to enable the built in camera when a palmprint authentication flow is started and keep the working state of the lighting lamp to be set into a lighting mode when external illumination is insufficient, so as to provide supplementary lighting output for the built in camera
Implementation Method 2
a screening output unit configured to select a frame of new image from a real time webcam video stream outputted by the built in camera as a candidate image
Data Source
AI summary
A non-contact palmprint authentication method, device and mobile terminal, and the method is applied to a mobile terminal including a built in camera and a lighting lamp, including: enabling the built in camera when a palmprint authentication flow is started and keeping the working state of the lighting lamp to be set into a lighting mode when external illumination is insufficient, so as to provide supplementary lighting output for the built in camera; selecting a frame of new image from a video stream outputted by the built in camera as a candidate image, acquiring the current state parameter set of the built in camera according to the candidate image, judging whether each state parameter in the set satisfies a preset standard corresponding to the parameter, and outputting the candidate image as a palmprint-matched contrast palmprint image if all the state parameters satisfy the corresponding preset standards; and, matching the contrast palmprint image with one or more pre-recorded benchmark palmprint images to perform user authentication. The authentication method can effectively improve the output quality of the contrast palmprint image, so as to improve the performance of the non-contact palmprint authentication technology.