In-Cabin Vehicle Authentication Using Displayed Verification Cues
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Solution Overview
Problem
Existing vehicle authentication systems using information processors with wide communication ranges struggle to accurately determine if the device is present inside the vehicle cabin, unlike traditional electronic keys, leading to potential misuse.
Innovation Solution
A vehicle authentication device that displays verification information on a display device within the vehicle cabin and receives corresponding user inputs via an information processor, allowing accurate determination of the device's presence through matching digit or text strings, or utterance information, ensuring secure engine or power supply starting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an information processor with wide communication range is used instead of electronic key, then communication versatility is improved, but presence determination accuracy deteriorates
Solution Approach 1:
The patent introduces verification information displayed on the vehicle's display device as an intermediary element. This mediator allows the system to verify the user's presence inside the cabin by comparing the operation information received from the information processor with the displayed verification information, thereby resolving the accuracy issue while maintaining communication versatility
Solution Approach 2:
The system implements feedback by displaying verification information on the vehicle's display device and requiring the user to input corresponding operation information through the information processor. This feedback loop enables the authentication device to determine whether the user is present inside the cabin, solving the presence determination accuracy problem
2Measurement precision
If verification information is displayed on display device, then presence determination accuracy is improved, but device complexity increases
Solution Approach 1:
The patent utilizes the vehicle's existing display device and information processor for the verification process, making these multi-functional components serve both their original purposes and the authentication function. This approach improves presence determination accuracy without significantly increasing device complexity
Solution Approach 2:
The system uses the vehicle's own display device to present verification information and relies on the user's natural interaction (inputting operation information) to complete the verification process. This self-service approach minimizes additional components while achieving accurate presence determination
Data Source
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AI summary
A vehicle authentication device (10) includes an electronic control unit. The electronic control unit is configured to display predetermined verification information on a display device (13), receive, via an information processor (20) possessed by a user (30), information on an operation performed by the user (30) after the verification information is displayed, and determine that the information processor (20) is present inside a vehicle cabin, when the information on the operation has a predetermined correspondence with the verification information.