Head-Mounted Display Motion Authentication
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Solution Overview
Problem
Existing head-mounted display devices face security challenges as they can be impersonated using stolen images, lacking robust authentication methods to ensure proper user identification.
Innovation Solution
A head-mounted display device that captures a user's motion and authenticates them using a track of their motion, making it difficult to duplicate the authentication information, thereby enhancing security by using a photographing unit, track acquiring unit, and authentication processing unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods (character strings or images) are used, then authentication functionality is provided, but security is compromised due to ease of impersonation
Solution Approach 1:
The patent replaces traditional static authentication methods (character strings, images) with dynamic motion-based authentication. The photographing unit captures the user's head motions, and the track acquiring unit extracts motion trajectories, creating a dynamic authentication mechanism that is difficult to replicate compared to static credentials.
Solution Approach 2:
The authentication system transitions from static authentication data to dynamic motion patterns. The system captures real-time head motions during authentication, requiring the user to perform specific motion patterns that are recorded as authentication tracks. This dynamic approach makes impersonation significantly more difficult.
2Reliability
If motion-based authentication is implemented, then security is improved by reducing impersonation risk, but device complexity increases due to additional photographing and track processing components
Solution Approach 1:
The photographing unit serves multiple functions: it captures authentication motion patterns, monitors user presence, and can potentially record other biometric data. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while enabling motion-based authentication.
3Measurement precision
If the photographing unit continuously captures motion data, then authentication accuracy is improved, but energy consumption increases
Solution Approach 1:
The photographing unit operates periodically rather than continuously, activating only during authentication events. The system triggers photographing when authentication is required and stops when authentication is complete or timeout occurs. This periodic operation maintains motion track accuracy while significantly reducing energy consumption compared to continuous capture.
Solution Approach 2:
The system performs preliminary checks to determine whether authentication is required before activating the photographing unit. The control unit evaluates authentication needs based on system state, user actions, or security policies, enabling the photographing unit only when necessary. This preliminary assessment prevents unnecessary energy consumption while ensuring accurate motion capture when authentication is actually needed.
Data Source
AI summary
A head-mounted display device that enables a user to simultaneously visually recognize a virtual image and an outside scene includes a photographing unit configured to photograph at least a part of a visual field direction of the user in a state in which the user wears the head-mounted display device and acquire a motion of the user; a track acquiring unit configured to acquire a track of the motion of the user from the motion photographed by the photographing unit; and an authentication processing unit configured to authenticate, using the track acquired by the track acquiring unit, whether the user is a proper user.