Multi-Camera Authentication for Shared Device Security
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Solution Overview
Problem
Existing computing devices face security challenges when multiple users, such as family members, share access and have the same password, leading to potential unauthorized access to personal information and service accounts, compromising security and user privacy.
Innovation Solution
Implementing a multi-camera system where the front-facing camera captures an image of the user for authentication and authorization purposes, allowing the primary user to set different authorization levels for various functionalities of applications, ensuring only authorized users can perform specific actions with the back-facing camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If password-based authentication is used to allow multiple users to access the device, then ease of operation is improved, but security is worsened because authorized users can access personal information and service accounts
Solution Approach 1:
The patent segments authentication into two distinct layers: device-level authentication (password/PIN for unlocking) and application-level authentication (biometric verification for specific apps). This segmentation allows the device to be accessible to multiple users while preventing unauthorized access to specific personal information, thereby resolving the contradiction between ease of operation and security.
2Reliability
If biometric authentication is required for every application access, then security is improved, but device complexity and ease of operation are worsened
Solution Approach 1:
The patent applies local quality by making biometric authentication required only for specific personal information and applications that need enhanced security, while other non-sensitive applications remain accessible through standard device unlocking. This selective application of biometric authentication reduces overall system complexity while maintaining security where needed.
3Reliability
If biometric authentication is implemented for all users, then security is improved, but loss of time increases due to additional authentication steps
Solution Approach 1:
The patent implements preliminary action by capturing and storing biometric data during an initial setup phase, so that subsequent authentication processes can quickly verify users without requiring lengthy data collection. This preliminary capture of biometric information reduces the time penalty for enhanced security authentication.
4Reliability
If the system performs authentication for all applications, then security is improved, but use of energy increases
Solution Approach 1:
The patent applies partial action by performing biometric authentication only for specific personal information and applications that require enhanced security, rather than for all applications on the device. This selective authentication approach maintains security for sensitive areas while conserving energy by avoiding unnecessary authentication processes for non-sensitive applications.
Data Source
AI summary
A device includes two cameras, a front facing camera and a back facing camera. In response to a request to use one camera (e.g., the back facing camera) with particular functionality of an application, the application queries a system to verify whether the user is authenticated and authorized to use the camera with the particular functionality of the application. This authentication and authorization is performed based on an image of the user captured using another camera of the device (e.g., the front facing camera). Depending on whether the user is authenticated and authorized to use the camera with the particular functionality of the application, the particular functionality is performed using the camera, secondary (e.g., lesser) functionality is performed using the camera, or no functionality is performed using the camera.