Fingerprint Sensor Triggered Voice Interaction Bypassing Trigger Phrases
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Solution Overview
Problem
Current electronic devices require a trigger phrase to activate voice assistants, which can be inconvenient and lack sufficient security for voice interactions, especially when accessing private data.
Innovation Solution
The integration of a fingerprint sensor with voice input systems to authenticate users and bypass the need for a trigger phrase, enabling secure voice interactions by using fingerprint data to authorize device commands and provide two-factor authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a trigger phrase is required to activate voice assistant, then voice interaction security is improved, but user convenience and interaction naturalness deteriorate
Solution Approach 1:
The system performs preliminary authentication by detecting fingerprint data before voice interaction begins. The fingerprint sensor captures biometric data and authenticates the user in advance, establishing a trusted state that allows subsequent voice commands to execute without requiring a trigger phrase. This preliminary security check enables the system to later operate in a more convenient mode.
Solution Approach 2:
The system dynamically adjusts its operational mode based on authentication state. When fingerprint data is detected and authenticated, the system transitions from a secure but restrictive mode (requiring trigger phrases) to a convenient mode (allowing direct voice commands). This dynamic behavior allows the system to optimize between security and convenience based on real-time conditions.
2Reliability
If fingerprint authentication is added to voice interaction system, then security against unauthorized access is improved, but device complexity increases
Solution Approach 1:
The fingerprint sensor is integrated into the existing device infrastructure, serving multiple functions including device unlock, payment authentication, and now voice interaction security. By leveraging an already-present biometric authentication component for multiple purposes, the system enhances security without adding dedicated new hardware specifically for voice commands.
Solution Approach 2:
The system uses the device's existing processing capabilities and authentication framework to handle fingerprint verification for voice interactions. Rather than implementing a separate authentication subsystem, the voice assistant leverages the device's built-in security processing, biometric database, and authorization mechanisms to provide enhanced security.
Data Source
AI summary
An electronic device includes an audio capture device operable to receive audio input, a fingerprint sensor operable to receive fingerprint data, and one or more processors, operable with the audio capture device and the fingerprint sensor. The fingerprint sensor can authenticate a person as an authorized user of an electronic device while device commands are being received in the form of audio input to allow for secure voice interactions without requiring a trigger phrase. The fingerprint sensor can be used in combination with the receipt of voice input to perform two-factor authentication. The fingerprint sensor and audio capture device can be used in combination to enroll, or update enrollment, of a user interacting with a voice assistant as well.