Wireless Accessory Location Tracking via Crowdsourced Beacon Keys

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Solution Overview

Problem

Wireless accessories such as wireless earbuds, headphones, and smartwatches cannot be tracked when lost or stolen due to their inability to determine their location and communicate with remote tracking services over a wide area network.

Innovation Solution

A data processing system that enables the determination of a wireless accessory's location by generating and broadcasting public keys, sending these keys to a server for location data, decrypting the data using a private key, and processing it to determine the accessory's probable location, utilizing a beacon scan and low-power baseband processor operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If wireless accessories use peer-to-peer communications without wide area network access, then power consumption is reduced and device simplicity is maintained, but the ability to track location when lost or stolen is lost

Engineering Contradiction:
Improvepower consumptionVSAvoidlocation tracking capability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent introduces a remote server as an intermediary that stores location data received from finder devices. When a wireless accessory is lost, the owner's electronic device queries the server for location information. The server acts as a mediator between finder devices that detect beacons and the owner seeking to locate the accessory, enabling tracking without requiring the accessory to have direct wide area network access.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary actions by having finder devices continuously scan for and detect beacon signals from wireless accessories, and by having the remote server pre-store location data associated with public keys before the accessory is lost. This preliminary detection and data storage enables immediate location tracking when needed, without requiring the accessory to actively communicate at the moment of loss.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If wireless accessories broadcast beacon signals continuously, then location detection accuracy is improved, but power consumption increases

Engineering Contradiction:
Improvelocation detection accuracyVSAvoidpower consumption
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic beacon signal transmission instead of continuous broadcasting. The wireless accessory transmits beacon signals at intervals, allowing finder devices to detect locations over time while the accessory conserves power during non-transmission periods. This periodic action maintains location detection capability while significantly reducing energy consumption compared to continuous broadcasting.

Inventive Principle:
Principle #19Periodic action

3Device complexity

If location data is transmitted unencrypted, then communication simplicity is maintained, but security is compromised

Engineering Contradiction:
Improvecommunication protocol complexityVSAvoidsecurity vulnerability
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the parameter of data format from unencrypted to encrypted form. Location data and public keys are transmitted in encrypted format using cryptographic protocols. This parameter change increases security by protecting sensitive information from unauthorized access while maintaining relatively simple communication protocols through the use of standardized encryption methods.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12483858B2System and method for locating wireless accessories
Publication Date: 2025.11.25 APPLE INC
  • US12483858B2 patent drawing
  • US12483858B2 patent drawing
  • US12483858B2 patent drawing

AI summary

Embodiments described herein provide for system and methods to crowdsource the location of wireless devices and accessories that lack a connection to a wide area network. One embodiment provides for a data processing system configured to perform operations comprising loading a user interface on an electronic device, the user interface to enable the determination of a location of a wireless accessory that is associated with the electronic device, generating a set of public keys included within a signal broadcast by the wireless accessory, the signal broadcast during a first period, sending the set of public keys to a server with a request to return data that corresponds with a public key in the set of public keys, decrypting the location data using a private key associated with the public key, and processing the location data to determine a probable location for the wireless accessory.