Secured Storage for Offline Digital Key Tracking

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Solution Overview

Problem

The current digital key registration and tracking process is resource and time intensive, requiring a communication link between vehicles and backend systems, which can be inefficient, especially in cases of vehicle theft or insurance investigations where data needs to be collected offline.

Innovation Solution

Storing digital key usage data in a secured storage device on user equipment allows for offline digital key generation and usage, with data transmission to the backend only when necessary, enabling secure and efficient key tracking without continuous connectivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If digital key registration is performed at a Key Tracking Server, then key tracking data collection is improved, but the process becomes resource and time intensive requiring continuous communication links

Engineering Contradiction:

Improvekey tracking data collectionVSAvoidregistration process time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-storing key tracking data in the user equipment's secure storage before the actual registration process is needed. This allows the data to be available immediately when required, eliminating the need for time-consuming real-time registration at the Key Tracking Server while maintaining reliable key tracking capability.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If continuous communication link is maintained between vehicle and backend, then key tracking is improved, but system complexity and resource consumption increase

Engineering Contradiction:

Improvekey trackingVSAvoidcommunication link requirements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the key tracking data collection function from the continuous communication link requirement. By storing data locally in the user equipment's secure storage, the system maintains key tracking capability without requiring a persistent communication link between the vehicle and backend, thereby reducing system complexity while preserving reliability.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If data is stored in secured storage device on user equipment, then offline digital key generation is enabled, but data transmission to backend is delayed

Engineering Contradiction:

Improveoffline digital key generationVSAvoiddata transmission timing

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

4Loss of information

If key tracking data is collected in real-time, then data availability is improved, but communication resources are consumed continuously

Engineering Contradiction:

Improvedata availabilityVSAvoidcommunication resource consumption

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The patent applies self-service by enabling the user equipment to autonomously store and manage key tracking data in its secure storage. The system serves itself by maintaining data availability locally without requiring continuous communication with the backend, thereby reducing communication resource consumption while preserving data availability for when needed.

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4322473A1Method for user equipment, method for backend, apparatus and computer program

Publication Date: 2024.02.14 BAYERISCHE MOTOREN WERKE AG

Figure 1~3
Figure 4

AI summary

Embodiments relate to a method 100 for user equipment. The method comprises receiving 110 data indicative of a usage of a digital key from a communication device and storing 120 the data in a secured storage device of the user equipment.