Digital Key Wallet Storage Switching for Vehicle Access
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Solution Overview
Problem
Digital key wallets stored in smartphones can become inaccessible due to phone inoperability or battery depletion, preventing vehicle access.
Innovation Solution
A system and method that automatically switch the storage location of a digital key wallet between cloud storage and a secure telematics unit within a vehicle, using a backoffice server with a radio intelligence database and a rule-based vehicle pattern matrix to manage communication link status and initiate transfers to fallback devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital key wallet is stored in smartphone, then flexibility and convenience are improved, but accessibility is worsened when phone becomes inoperable or battery depleted
Solution Approach 1:
The digital key wallet system is segmented across multiple storage locations: smartphone, cloud storage, and fallback devices. This segmentation allows the key wallet to be accessed from different devices depending on availability, resolving the contradiction between convenience of smartphone storage and reliability when phone becomes inoperable.
Solution Approach 2:
Cloud storage acts as an intermediary between the smartphone and fallback devices. When the smartphone is unavailable, the system automatically transfers the digital key wallet through the cloud to a fallback device, maintaining accessibility without requiring direct smartphone operation.
2Reliability
If digital key wallet is stored in secure telematics unit, then reliability is improved, but device complexity is worsened
Solution Approach 1:
The cloud storage system provides multi-functionality by serving as a universal intermediary that can transfer the digital key wallet to multiple different fallback devices (smartwatch, tablet, another smartphone). This universal approach improves reliability without requiring complex integration with each specific fallback device.
Solution Approach 2:
The system automatically monitors communication link status and initiates transfers to fallback devices without user intervention. This self-service mechanism handles the complexity of multi-device management automatically, reducing the perceived complexity for users while maintaining high reliability.
3Reliability
If automatic switching between storage locations is implemented, then reliability is improved, but device complexity is worsened
Solution Approach 1:
The system continuously monitors the status of communication links between the smartphone and cloud storage, and between cloud storage and fallback devices. This feedback mechanism automatically triggers transfers when link quality degrades, ensuring continuous access while automating the switching complexity.
Solution Approach 2:
The system performs preliminary transfers to fallback devices before complete loss of smartphone functionality occurs. By detecting early signs of communication link degradation and proactively transferring the digital key wallet, the system ensures continuous access while managing switching complexity through early intervention.
Data Source
AI summary
A system and method for estimation method for determining a location of a vehicle digital key wallet includes selecting, by a user, whether to store a digital key wallet in a cloud storage or within a secure telematics unit contained within a vehicle. The digital key wallet is used to initiate an event within the vehicle. A backoffice server stores data including a radio intelligence database and a rule-based vehicle pattern matrix. The digital key wallet is switched to a fallback device based on the status of a communication link with the secure telematics unit, the radio intelligence database, and the rule-based vehicle pattern matrix.