PROX Card Permissions for Private Third-Party Accessory Pairing

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Solution Overview

Problem

Third-party applications on mobile devices are granted persistent and unfettered access to radio communication interfaces, posing privacy and security risks by allowing unauthorized access to accessory devices.

Innovation Solution

Implementing a system that restricts radio communication access to accessory devices through an authentication database, where user-selected and application-specific permissions are stored, ensuring only approved devices can be accessed by third-party applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If third-party applications are granted persistent and unfettered access to radio communication interfaces, then application functionality and ease of operation are improved, but security and privacy are worsened due to unauthorized access to accessory devices

Engineering Contradiction:

Improveapplication functionalityVSAvoidunauthorized access

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent segments radio communication access by creating an authentication database that divides access permissions into application-specific and accessory device-specific entries. Each application can only access accessory devices that are explicitly authorized in the database, preventing universal access while maintaining functionality for approved devices.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The authentication database acts as an intermediary between applications and radio communication interfaces. The system routine mediates access requests by checking the authentication database before granting radio access, ensuring that only authorized application-accessory pairs can communicate.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If universal access to accessory devices is allowed, then device versatility and adaptability are improved, but security risks and privacy risks are worsened

Engineering Contradiction:

Improvedevice compatibilityVSAvoidsecurity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by making access permissions specific to each application-accessory device pair rather than applying a universal access policy. The authentication database stores granular permissions where each entry is tailored to a specific application and its authorized accessory devices, allowing versatility while maintaining security through localized access control.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4661342A1Privacy enhanced PROX cards for third party accessories

Publication Date: 2025.12.10 APPLE INC

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AI summary

A method of secure accessory device discovery and radio pairing. The method may comprise, receiving, at a network access routine of a first device, data from a first application. The data may indicate one or more properties of an accessory device for communication with the first application. A list of one or more accessory devices capable of being connected to the first device via the radio may be determined through a radio of the first device. The network access routine may display an overlap list and receive a user selection responsive to the displayed list. The selection may be stored in an authentication database of the first device and radio communication by the first application may be restricted to accessory devices in the authentication database.