Person-Based Authorization Tokens for Shared Account Personalization

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Solution Overview

Problem

Existing shared account systems for voice interface devices and IoT devices lack personalization for individual users, leading to generic interactions and inability to differentiate between users, resulting in inadequate customization and privacy concerns.

Innovation Solution

Implement person-based authorization by using voice recognition, face recognition, or other methods to authenticate individual users, generating tokens with both account and person identifiers to enable personalized interactions and data sharing with third-party applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a shared account system is used for multiple users, then device accessibility and sharing capability are improved, but user personalization and privacy protection deteriorate

Engineering Contradiction:
Improvedevice sharing capabilityVSAvoiduser personalization
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent segments the authentication system into two distinct layers: account-level authentication (for device access) and person-level authentication (for personalization). This segmentation allows the system to simultaneously support multiple users accessing a shared device while maintaining individual user profiles and preferences, thereby resolving the contradiction between device sharing capability and user personalization.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a new dimension of person identification beyond traditional account authentication. By adding person-level identifiers (such as voice prints, facial recognition data, or other biometric data) to the existing account layer, the system enables personalized experiences for each user without compromising the shared access model. This dimensional expansion allows simultaneous achievement of both device sharing and user personalization.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If person-based authentication is implemented, then user personalization and privacy control are improved, but system complexity and authentication time increase

Engineering Contradiction:
Improveuser personalizationVSAvoidauthentication system complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent implements preliminary action by pre-enrolling user biometric data (voice prints, facial recognition data, etc.) and creating person profiles before actual authentication occurs. During authentication, the system simply compares the captured biometric data against the pre-stored templates, significantly reducing computational complexity and authentication time. This pre-processing approach maintains user personalization capabilities while minimizing the complexity burden during runtime.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces person identifiers and person profiles as intermediary elements between the user and the application layer. These intermediaries carry person-specific information without requiring complex real-time processing. The person identifier acts as a lightweight mediator that enables personalized data retrieval and application behavior without adding significant system complexity, thus resolving the contradiction between personalization and system complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If traditional account-based authentication is used, then system simplicity is maintained, but user differentiation and personalized data access are lost

Engineering Contradiction:
Improveauthentication system simplicityVSAvoiduser-specific data differentiation
Core Design Contradiction:
Device complexityVSLoss of information

Solution Approach 1:

The patent implements a nested authentication structure where person-level identification is embedded within the account-level authentication framework. The person identifier is nested within the account context, allowing the system to maintain the simplicity of account-based authentication while internally incorporating person-specific differentiation. This nesting enables user-specific data access and personalization without requiring a complete overhaul of the existing authentication system.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS12380450B1Person-based authorization for shared account systems
Publication Date: 2025.08.05 AMAZON TECH INC
  • US12380450B1 patent drawing
  • US12380450B1 patent drawing
  • US12380450B1 patent drawing

AI summary

Disclosed are various embodiments for person-based authorization for shared account systems. In one embodiment, a service receives a user request from a client device associated with an account to perform an action using an application. The service then identifies a user originating the user request. The service generates a token that includes an account identifier corresponding to the account and a person identifier corresponding to the user. The service sends the user request and the token to a provider of the application.