Voice Authentication Device Finder Offline Trigger
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Solution Overview
Problem
Mobile computing devices face challenges in providing a secure and user-friendly device finder feature without relying on network connections like the Internet or Bluetooth, as existing solutions require network access to trigger the device finder functionality.
Innovation Solution
Implementing voice authentication on mobile computing devices to listen for a trigger phrase spoken by an authorized user, allowing the device to output an alert sound to assist in locating itself without needing network connectivity, by comparing voice input with stored data using features extraction and speech recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network connection (Internet or Bluetooth) is required to trigger device finder functionality, then the device can be located remotely, but the device cannot function offline and requires network access
Solution Approach 1:
The device performs voice authentication and triggers the device finder functionality autonomously without requiring external network services. The processor compares captured voice input against stored voiceprints locally, enabling the device to locate itself offline through self-contained voice recognition capabilities
Solution Approach 2:
The patent replaces the network-based trigger mechanism with a voice-based acoustic trigger. Instead of requiring network communication to activate the device finder, the system uses the microphone to capture voice input and the processor to recognize authorized trigger phrases, substituting mechanical/acoustic interaction for network-dependent operation
2Ease of operation
If network connection is required for device finder, then remote triggering is enabled, but security is reduced as anyone with network access can trigger it
Solution Approach 1:
The system performs preliminary voiceprint registration during device setup, storing authorized user voice patterns in secure memory. This preliminary authentication framework is established before actual device finder usage, enabling secure verification without requiring network connection during the locate operation
Solution Approach 2:
The voiceprint authentication system acts as an intermediary between the user and the device finder functionality. Instead of directly triggering the feature through network commands, the authorized user's voice serves as the authentication mediator that verifies identity before allowing the locate function to execute
3Object-affected harmful factors
If voice authentication is implemented, then security is improved by restricting access to authorized users, but device complexity increases
Solution Approach 1:
The voice recognition system leverages existing multi-functional components already present in mobile devices - the microphone serves both general audio purposes and voice authentication, while the processor handles both常规 computation and voiceprint comparison. This universal use of existing components minimizes additional hardware complexity
Solution Approach 2:
The system creates a digital copy (voiceprint) of the authorized user's voice characteristics and stores it in memory. This copied representation enables rapid authentication comparisons without requiring complex real-time analysis, simplifying the verification process while maintaining security
Data Source
AI summary
A computing device may receive an indication of an audio signal captured by a microphone, wherein the audio signal includes voice input. The computing device may determine that the voice input in the audio signal is from an authorized user of the computing device and includes a trigger phrase associated with a request to trigger device finder functionality based at least in part on comparing the voice input with data provided by the authorized user of the computing device. The computing device may, in response to determining that the voice input in the audio signal is from the authorized user of the computing device and includes the trigger phrase associated with the request to trigger device finder functionality, cause a speaker of the computing device to audibly output the alert sound to assist the authorized user to locate the computing device.