Acoustic One-Time Password Authentication via Ultrasound
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Solution Overview
Problem
Existing authentication systems, such as one-step and two-stage authorization systems, are cumbersome for users as they require manual input of one-time passwords, limiting their applicability and efficiency.
Innovation Solution
A method and system where a user device generates and sends a one-time password as an acoustic signal within the ultrasound or infrasound range to an authenticator device, eliminating the need for manual input and leveraging existing speaker and microphone hardware in devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual input of one-time password is required, then authentication security is maintained, but user convenience and ease of operation deteriorates
Solution Approach 1:
The patent replaces the mechanical manual input process with an automated acoustic signal transmission system. The one-time password is converted into acoustic signals (ultrasound or infrasound) and transmitted automatically from the user device to the authenticator device, eliminating the need for manual typing while maintaining security.
Solution Approach 2:
The user device automatically performs the authentication task without requiring manual intervention. The device generates the one-time password, converts it to acoustic signals, and transmits it automatically, making the system self-serving and greatly improving ease of operation.
2Ease of operation
If additional hardware devices are introduced to automate one-time password input, then ease of operation improves, but device complexity and cost increases
Solution Approach 1:
The patent makes existing devices (smartphones, tablets, computers) perform the additional function of automatic one-time password transmission by utilizing their built-in speakers or audio output capabilities. No separate dedicated authentication device is needed, as these multi-functional devices already possess the required hardware.
Solution Approach 2:
The patent uses acoustic signals as an intermediary medium to transfer the one-time password from the user device to the authenticator device. This intermediary approach allows existing hardware to communicate authentication data without requiring direct specialized connection hardware.
3Adaptability or versatility
If traditional acoustic ranges are used for signal transmission, then compatibility with existing hardware is maintained, but signal security and reliability deteriorates
Solution Approach 1:
The patent changes the frequency parameter of the acoustic signal from the traditional audible range to either ultrasound (above 20 kHz) or infrasound (below 20 Hz) ranges. This parameter change enhances security by making the signals imperceptible to humans and reduces interference from ambient acoustic noise, while still being transmittable through existing speaker hardware.
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
Facilitates authentication by simplifying the handling process for users, reducing manual input requirements, and expanding applicability to various scenarios without the need for additional hardware changes.
Implementation Method 1
the acoustic signal comprises a frequency within an ultrasound range or an infrasound range
Data Source
AI summary
A method and a user device (110) for authentication of the user device (110) as well as a method and an authenticator device (120) for authentication of the user device (110) are disclosed. The user device (110) generates (A030) a one-time password. The user device (110) sends (A040), to an authenticator device (120), the one-time password as an acoustic signal, wherein the acoustic signal comprises a frequency within an ultrasound range or an infrasound range. The authenticator device (120) receives (A050), from the user device (110), the one-time password. The authenticator device (120) validates (A060) the one-time password.