Interactive Secret Sharing via Motion Path Tracking
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Solution Overview
Problem
Existing methods for sharing secrets in authentication processes, such as accessing restricted resources, are laborious and do not provide an enjoyable user experience due to the limitations of input devices, which often require alphanumeric codes.
Innovation Solution
The method involves receiving video data to track the observed path of a device using image sensors or depth cameras, and comparing it with self-reported position information from the device to determine if it is within a threshold tolerance, thereby granting access to the resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If alphanumeric codes are used as shared secrets with traditional input devices, then authentication security is maintained, but user experience deteriorates due to laborious entry
Solution Approach 1:
The patent replaces mechanical input devices (keyboard, mouse) with optical tracking systems including depth cameras and inertial measurement units. This substitution allows users to authenticate through natural physical movements captured by the camera and processed into actionable input, eliminating the need for manual typing of alphanumeric codes and significantly improving ease of operation while reducing authentication time
Solution Approach 2:
The patent introduces an intermediary processing system that captures raw video data and IMU data, then processes these inputs into authenticated commands. The system acts as a mediator between the user's natural movements and the authentication system, translating physical gestures into recognized input patterns that can trigger authentication actions without requiring direct manual input
2Ease of operation
If physical movements are tracked using video data and position information, then user experience is improved, but system complexity increases due to multiple sensors and processing requirements
Solution Approach 1:
The patent merges multiple sensing modalities (video camera tracking and IMU position reporting) into a unified authentication system. By combining optical tracking data with inertial measurement data, the system achieves robust movement verification while sharing processing logic across both input sources, thereby managing complexity through integration rather than separate handling of each sensor type
Solution Approach 2:
The system implements multi-functional processing where the video capture system serves multiple purposes: capturing user movements for authentication, providing visual feedback during the authentication process, and enabling various types of gesture-based inputs. This universal approach allows a single system architecture to handle diverse authentication scenarios without requiring separate specialized hardware for each function
Data Source
AI summary
Interactive secret sharing includes receiving video data from a source and interpreting the video data to track an observed path of a device. In addition, position information is received from the device, and the position information is interpreted to track a self-reported path of the device. If the observed path is within a threshold tolerance of the self-reported path, access is provided to a restricted resource.