Resonance Frequency Mobile Device Authentication

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Solution Overview

Problem

Current security measures on mobile devices, such as password protection and direct user authentication, are being increasingly circumvented, posing a risk of unauthorized access to valuable data stored on these devices, which can lead to damage to server-side infrastructure.

Innovation Solution

A system and method that uses resonance frequency recognition, where a mobile device emits a tone when placed on a specific surface, and only unlocks if the received resonance frequency matches a stored frequency of that surface, thereby securing access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional password protection and direct user authentication are used, then ease of operation is maintained, but security reliability deteriorates as these methods are increasingly circumvented

Engineering Contradiction:
ImprovesecurityVSAvoidauthentication convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces traditional mechanical/password-based authentication systems with a physical resonance-based authentication system. The mobile device transmits acoustic signals to a surface and analyzes the resonance frequency response, substituting the mechanical key entry process with acoustic wave interaction and spectral analysis to achieve more reliable security while maintaining ease of use.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the authentication parameter from static passwords to dynamic resonance frequency characteristics. By analyzing the unique acoustic fingerprint of surfaces through their resonance responses to transmitted tones, the system creates a new parameter space for authentication that is both secure and convenient, resolving the contradiction between security reliability and operational ease.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If resonance frequency recognition is implemented, then security reliability improves through non-traditional authentication, but device complexity increases due to additional hardware and processing requirements

Engineering Contradiction:
ImprovesecurityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent leverages existing multi-functional components in mobile devices - the speaker serves both audio output and acoustic signal transmission for resonance analysis, while the microphone handles both voice input and resonance frequency detection. This universal use of existing components minimizes additional hardware complexity while implementing secure resonance-based authentication.

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

Solution Approach 2:

The system uses the mobile device's own existing acoustic components (speaker and microphone) to perform the resonance analysis, making the device self-sufficient for the additional security function. The device generates its own test tones and captures its own resonance responses, eliminating the need for external specialized hardware and reducing overall system complexity.

Inventive Principle:
Principle #25Self-service

3Reliability

If resonance frequency matching is required for unlocking, then unauthorized access is prevented, but authentication time increases due to the additional verification steps

Engineering Contradiction:
ImprovesecurityVSAvoidauthentication time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent employs periodic acoustic signal transmission followed by rapid spectral analysis of the resonance response. By using short, periodic test tones and quickly processing the frequency domain response through FFT algorithms, the system achieves secure resonance verification in minimal time, preventing unauthorized access while maintaining fast authentication speeds comparable to or faster than traditional methods.

Inventive Principle:
Principle #19Periodic action

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

Enhances mobile device security by providing a non-traditional authentication method that is resistant to unauthorized access, ensuring that only authorized surfaces can unlock the device, thus protecting sensitive data.

Implementation Method 1

transmitting, by the first mobile computer device, a tone to a surface of an object; receiving, by the first mobile computer device, a compound resonance frequency from the object based on the transmitted tone

Methodology Applied
Scientific EffectResonance: Resonance

Data Source

PatentUS10149167B2Mobile device locking
Publication Date: 2018.12.04 INTERNATIONAL BUSINESS MACHINE CORPORATION
  • US10149167B2 patent drawing
  • US10149167B2 patent drawing
  • US10149167B2 patent drawing

AI summary

Systems and methods for securing access to a mobile device are disclosed. A method includes: synchronizing, by a first mobile computer device, with a remote mobile computer device; transmitting, by the first mobile computer device, a tone to a surface of an object; receiving, by the first mobile computer device, a compound resonance frequency from the object based on the transmitted tone; determining, by the first mobile computer device, the received compound resonance frequency conforms to a stored compound resonance frequency; unlocking, by the first mobile computer device, the first computer device based on the determining; and establishing, by the first mobile computer device, a group connection with the remote mobile computer device based on the unlocking.