Vehicle Function Access Using Transferable Graphical Tokens
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Solution Overview
Problem
Existing vehicle access control systems require costly special keys and tools for programming, making it difficult to spontaneously transfer access authorizations to vehicle functions.
Innovation Solution
A method using graphical tokens with high entropy, created by authorized individuals, which can be sensed and transmitted to vehicles, allowing authorized persons to access specific vehicle functions without the need for special devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If special keys with programming devices are used for access control, then security and access control capability are improved, but cost and device complexity increase
Solution Approach 1:
The patent replaces physical keys with graphical token copies that can be transmitted electronically. The authorized person creates a graphical token (drawing, pattern, or image) that serves as a copy of their authorization, which can be shared and presented without requiring physical key duplication equipment.
Solution Approach 2:
The patent substitutes mechanical key systems with graphical/digital token systems. Instead of physical keys being read by mechanical or electronic key readers, the system uses graphical tokens that can be captured by cameras or sensors and processed digitally, eliminating the need for special programming devices.
2Reliability
If special keys are programmed for access control, then access authorization is secured, but cost and time for key creation increase
Solution Approach 1:
The authorized person creates their own graphical token without external assistance. The system allows the authorized individual to generate, save, and transmit their own access tokens independently, eliminating the need for professional key programmers and reducing time loss.
Solution Approach 2:
The authorized person creates and stores their graphical token in advance before it is needed for access. The token can be prepared, saved to a device, and transmitted beforehand, so that when access is needed, the process is already complete or can be quickly activated.
3Reliability
If graphical tokens with high entropy are required, then security against replication is improved, but difficulty of creating unique tokens increases
Solution Approach 1:
The system leverages the natural randomness of human drawing behavior to generate high-entropy tokens. Each person's unique drawing style, pressure patterns, speed variations, and motor control characteristics automatically create unpredictable graphical tokens without requiring the user to understand or implement cryptographic entropy generation.
Solution Approach 2:
The system measures multiple parameters of the graphical input including position coordinates, pressure force, drawing speed, acceleration, and temporal patterns. By analyzing combinations of these parameters, the system generates high entropy from simple user actions, transforming ease of creation into security.
Data Source
AI summary
A method for controlling the use of a pre-defined vehicle function of a vehicle includes capturing a graphical token; transmitting the token to the vehicle; transmitting the token to a person who should be authorized to use the vehicle function; capturing a graphical token presented at the vehicle; and unlocking the vehicle function if the presented token matches the transmitted token. The graphical token includes a manual graphical input of a person authorized to use the vehicle function.