Vehicle Digital Key Pairing via Proximity Identifier Matching

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Solution Overview

Problem

Current digital key services for vehicles face ergonomic issues in pairing with mobile phones and managing chip cards, leading to user inconvenience and limited functionality, especially when the terminal is unavailable or malfunctioning.

Innovation Solution

A method and system that simplifies the pairing process by using proximity-based wireless communication to exchange identifiers between a vehicle and a user terminal, enabling secure communication channels and allowing centralized management of chip card services through a digital interface, including blocking, ordering new cards, and handling multiple cards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional pairing procedures are used for digital key services, then secure authentication can be achieved, but the pairing process becomes complex and difficult for users to complete

Engineering Contradiction:
Improveauthentication securityVSAvoidpairing process simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent introduces a system as an intermediary between the user terminal and the vehicle control unit. This system receives identifiers from both parties, checks for matches in a database, and facilitates the pairing process by transmitting authentication data. The intermediary simplifies the user experience while maintaining security through centralized verification.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary actions by pre-storing reference identifiers in a database and pre-checking for matches before the actual pairing occurs. This allows the authentication process to be validated in advance, making the actual pairing operation simpler and faster for the user.

Inventive Principle:
Principle #10Preliminary action

2Device complexity

If chip card services are not integrated with digital key services, then system complexity is reduced, but user functionality and convenience are limited

Engineering Contradiction:
Improveservice integration complexityVSAvoidchip card management capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a universal system that handles both digital key services and chip card services through a single interface. The system can manage multiple types of authentication methods (terminal-based and card-based) and provides unified control for operations such as blocking, ordering new cards, and managing multiple cards, thereby increasing versatility without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system enables users to perform chip card management operations (blocking, ordering new cards) through automated self-service mechanisms. Users can interact with the system to manage their chip cards without requiring manual intervention, enhancing convenience while keeping the system architecture manageable.

Inventive Principle:
Principle #25Self-service

3Device complexity

If only a single chip card is supported per vehicle, then system management is simplified, but user flexibility and backup options are reduced

Engineering Contradiction:
Improvecard management complexityVSAvoidmultiple card support
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The system is designed to universally support multiple chip cards associated with a single vehicle. It can store and manage identifiers for multiple cards, allowing users to have backup options and flexibility in card usage while maintaining centralized management through the system database.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates easy and secure pairing of vehicles with user terminals, enhances user interaction with digital key services, and provides centralized management of chip cards, ensuring seamless vehicle access and operation even in the absence of the primary terminal.

Implementation Method 1

the first identifier and the second identifier having been transmitted beforehand to the user terminal by the device via wireless communication requiring proximity between the terminal and the device

Methodology Applied
Scientific EffectWireless communication: Electromagnetic Induction

Data Source

PatentUS12591656B2Method for registering digital keys of a vehicle in a virtual wallet, and associated devices
Publication Date: 2026.03.31 IDEMIA FRANCE SAS
  • US12591656B2 patent drawing
  • US12591656B2 patent drawing
  • US12591656B2 patent drawing

AI summary

The present invention relates to a method comprising the following steps:a system receives a first identifier and a second identifier transmitted by a user terminal, transmitted beforehand to the user terminal by the device via wireless communication requiring proximity between the user terminal and the device,the system checks for the existence of a match between two stored reference identifiers corresponding respectively to the first identifier and to the second identifier,provided that said match exists, the system transmits:a pairing password to the user terminal,a checker to a control unit of the vehicle, the checker being configured to authorize setup of a secure communication channel between the user terminal and the control unit of the vehicle.