Cross-Device Meeting Authentication Using Co-Presence and Mediation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Users participating in real-time communication sessions with multiple computing devices often face difficulties in quickly and seamlessly authenticating their secondary devices to control shared media systems, such as displays, due to limitations in short-range wireless communication capabilities.

Innovation Solution

A technique involving a mobile computing device transmitting authentication information to a server, which then authenticates and enables a secondary computing device to join the session, allowing it to control the media system via short-range wireless communication or the Internet, leveraging co-presence in the same room.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a user attempts to authenticate a second computing device to control the media system, then the user can control the media system using multiple devices, but the authentication process becomes time-consuming and complex

Engineering Contradiction:
Improvenumber of devices that can control media systemVSAvoidauthentication time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system performs preliminary authentication by establishing a trusted relationship between the first computing device and the media system before the second device needs to authenticate. The first device obtains authentication credentials and shares them with the second device, so when the second device connects, authentication is already prepared and can occur rapidly without time-consuming manual verification processes.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The first computing device acts as an intermediary that bridges the authentication gap for the second device. It receives authentication information from the media system and transmits it to the second device, enabling the second device to authenticate without directly undergoing the full authentication process with the media system, thus reducing authentication time.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the media system requires authentication via short-range wireless communication, then security is improved, but devices without this capability cannot quickly join the session

Engineering Contradiction:
Improveauthentication securityVSAvoiddevice compatibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The authentication system is designed to work with multiple communication methods. While short-range wireless communication (like Bluetooth) is used when available for secure authentication, the system also supports alternative authentication paths through the first computing device for devices that lack short-range wireless capabilities, making the system universally compatible across different device types while maintaining security through the trusted intermediary approach.

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

Solution Approach 2:

The first computing device serves as a mediator that enables devices without short-range wireless communication capabilities to authenticate securely. It receives and verifies authentication credentials and relays them to the second device, allowing devices with limited communication capabilities to join the session without compromising security, thus achieving both security and compatibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the system allows multiple devices to join the real-time communication session, then user convenience is improved, but session management complexity increases

Engineering Contradiction:
Improveease of device joiningVSAvoidsession management complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The media system provides feedback to the first computing device when a second device attempts to join, including authentication credentials and session information. This feedback mechanism allows the system to automatically manage multiple devices by providing them with the necessary information to join, reducing the manual management burden while maintaining ease of operation for users.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system enables self-service authentication where the second computing device can automatically obtain authentication credentials from the first device without requiring manual intervention from the user or complex system configuration. The devices themselves handle the authentication process through automated credential sharing, simplifying session management while allowing multiple devices to join conveniently.

Inventive Principle:
Principle #25Self-service

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

Enables seamless and automatic cross-device authentication, allowing multiple devices to participate in real-time communication sessions without interrupting the session, by leveraging co-presence and remote server authentication.

Implementation Method 1

authentication information being indicative of the mobile computing device being in short-range wireless communication with the first computing device

Methodology Applied
Scientific EffectShort-range wireless communication: Electromagnetic Induction

Data Source

PatentUS20250358324A1Techniques for automatic cross-device meeting authentication
Publication Date: 2025.11.20 GOOGLE LLC
  • US20250358324A1 patent drawing
  • US20250358324A1 patent drawing
  • US20250358324A1 patent drawing

AI summary

An example method involves initializing a real-time meeting communication session, receiving information indicative of a mobile computing device of a user being present at a physical location of a first computing device, causing the mobile computing device of the user to display a first user interface (UI) element, responsive to a user selection of the first UI element, causing control of the real-time meeting communication session to be granted to the first computing device from the mobile computing device of the user, identifying a second computing device of the user, causing the second computing device of the user to display a second UI element, and allowing the user to participate in the real-time meeting communication session via the second computing device upon a user selection of the second UI element.