User Movement Authentication via Display Interaction and Audio Energy
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Solution Overview
Problem
Modern authentication techniques are vulnerable to sophisticated hacking, especially in emerging technologies like wearable and augmented/virtual reality, and sound-based authentication can reveal sensitive information.
Innovation Solution
A device with sensors and controller circuitry that measures user movement interacting with a displayed image, comparing it to a stored template for authentication, and uses energy in audio signals to authenticate user proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound-based authentication is used, then authentication capability is provided, but sensitive information about the user or environment may be revealed
Solution Approach 1:
The patent extracts only the essential authentication characteristics from the audio signal - specifically the energy levels at different frequencies and time periods - while discarding all other information. This is achieved by processing the audio signal through energy measurement circuits that output only authentication-relevant data, effectively separating the useful authentication information from the sensitive environmental and user information contained in the original sound signal.
Solution Approach 2:
The patent converts the potential harm of audio signals containing sensitive information into a benefit by using the energy characteristics of the audio signal as the authentication basis. Instead of using the raw audio content that could reveal sensitive information, the system measures energy levels which provide authentication capability while inherently protecting privacy by design.
2Measurement precision
If movement sensing is used for authentication, then user identification accuracy is improved, but device complexity increases
Solution Approach 1:
The patent makes the audio processing circuitry multi-functional by using the same energy measurement circuits for both authentication purposes and proximity detection purposes. The energy levels measured at different frequency ranges serve dual functions: authenticating the user's voice characteristics and determining whether the user is physically close to the device, thereby reducing the need for separate dedicated sensors and processing circuits.
Solution Approach 2:
The patent changes the parameter being measured from detailed audio signal characteristics to simplified energy levels at specific frequency ranges. This parameter transformation reduces processing complexity while maintaining authentication accuracy, as the energy measurements capture the essential voice characteristics without requiring complex signal analysis of the full audio spectrum.
Data Source
AI summary
A device for authenticating a user is described that comprises a sensor configured to measure the movement of a user in response to the interaction of the user with a displayed image and controller circuitry configured to authenticate the user in response to a positive comparison between the movement of the user and a stored movement associated with the user.