Contextual Sensor Modulation for Mobile Device Authentication
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Solution Overview
Problem
Existing biometric authentication methods in mobile devices are vulnerable to hacking and misuse, especially when devices are lost or stolen, as they rely solely on biometric data without considering contextual information.
Innovation Solution
A mobile device system that incorporates both biometric and contextual sensors to determine an authentication score, modulating it based on contextual inputs, and requiring secondary authentication or destroying the biometric template if the score falls below a threshold to enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If biometric authentication is used alone, then authentication speed is improved, but security reliability deteriorates due to vulnerability to hacking and device loss
Solution Approach 1:
The patent combines biometric authentication with contextual sensor data (location, motion, time, device state) to create a multi-factor authentication system. The processor integrates biometric scores with contextual modulation factors to generate a comprehensive authentication decision, merging multiple authentication modalities into a unified security mechanism that maintains speed while enhancing reliability.
Solution Approach 2:
The authentication threshold is made dynamic rather than static. The system modulates the authentication score based on real-time contextual conditions (e.g., unusual location, device motion patterns, time of day), allowing the security requirements to adapt dynamically to the situation. This dynamic approach enables faster authentication in low-risk contexts while imposing stricter verification in high-risk scenarios.
2Reliability
If contextual sensors are added to enhance security, then security reliability is improved, but device complexity increases
Solution Approach 1:
The patent leverages existing multi-functional mobile device components (GPS for location, accelerometer for motion, clock for time, sensor data for device state) to provide contextual authentication information. These sensors serve multiple purposes including navigation, fitness tracking, and now security authentication, eliminating the need for dedicated authentication hardware and reducing overall system complexity.
Solution Approach 2:
The system uses the device's own existing sensors and data sources to provide contextual authentication information, rather than requiring external authentication systems or additional specialized hardware. The mobile device itself generates the contextual modulation factors using its built-in capabilities, making the security enhancement self-sufficient and minimizing added complexity.
3Ease of operation
If authentication threshold is lowered for faster access, then ease of operation is improved, but security reliability deteriorates
Solution Approach 1:
The authentication threshold dynamically adjusts based on contextual risk assessment. In familiar, low-risk contexts (usual location, normal device usage patterns, expected time periods), the effective threshold is lowered allowing faster access. In unfamiliar or high-risk contexts (unusual location, abnormal motion patterns, suspicious device state), the threshold increases requiring stronger authentication, thus balancing ease of operation with security reliability adaptively.
Data Source
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AI summary
Disclosed is a mobile device to provide enhanced security based upon contextual sensor inputs. The mobile device may include: a biometric sensor; a contextual sensor; and a processor. The processor may be configured to: determine an authentication score based upon a biometric input received from the biometric sensor; modulate the authentication score based upon a contextual sensor input from the contextual sensor related to an event; and determine if the modulated authentication score falls below a predetermined threshold. If the authentication score falls below the predetermined threshold, the processor may command that a secondary authentication be performed or the destruction of a biometric template.