Cross-device login via near-field audio verification
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Solution Overview
Problem
Existing cross-device login methods require secondary user intervention, such as scanning codes or entering verification codes, which are not intelligent and inefficient.
Innovation Solution
A method that uses a server to send a verification code to an authorized device, which broadcasts the code as an audio signal that the device to be authorized can sense and verify, allowing it to log in without user intervention through near-field acoustic communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If code scanning or SMS verification is used for cross-device login, then login security is maintained, but user operation complexity increases and login efficiency decreases
Solution Approach 1:
The system enables automatic login by having the server send verification codes to authorized devices, which then automatically forward them to the device being authorized. This eliminates the need for users to manually scan codes or enter verification codes, making the system serve itself rather than requiring continuous user intervention.
Solution Approach 2:
An authorized device acts as an intermediary between the server and the device being authorized. It receives the verification code from the server and automatically transmits it to the target device, serving as a mediator that eliminates the need for manual user operation while maintaining security.
2Reliability
If manual verification code entry is required, then login security is ensured, but login time and operational steps increase
Solution Approach 1:
The automated verification code transmission system allows the devices themselves to complete the verification process without user intervention. The authorized device automatically sends the verification code to the device being authorized, and the system automatically completes the login process, eliminating manual entry time.
Solution Approach 2:
The system performs preliminary actions by pre-establishing trusted device relationships and pre-configuring automatic verification code transmission paths. When login is needed, the verification code is already routed and transmitted automatically, eliminating the time required for manual verification steps.
3Reliability
If traditional cross-device login methods are used, then authentication is achieved, but user experience and operational efficiency are reduced due to secondary intervention
Solution Approach 1:
The system achieves complete automation where authorized devices automatically participate in the authentication process of other devices. The verification code transmission and login completion happen without any secondary user intervention, maintaining authentication security while maximizing operational efficiency.
Solution Approach 2:
The system implements automatic feedback loops where the server monitors login requests, sends verification codes to authorized devices, and automatically processes the authentication result. This closed-loop feedback system eliminates manual intervention while maintaining secure authentication.
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
This approach enables intelligent cross-device login authentication without secondary user intervention, reducing authorization costs and improving user experience and operational efficiency.
Implementation Method 1
where the authorized device is a device that logs in by using the login information and that is authorized by the server; broadcasting, by the authorized device, an audio signal
Data Source
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AI summary
The present disclosure provides a method, a system, and an apparatus for cross-device login. A device to be authorized sends a login request to a server; the server sends, to an authorized device, a verification code used to verify the device to be authorized; the authorized device broadcasts an audio signal, where the audio signal includes at least the verification code; the device to be authorized obtains the verification code from the audio signal after sensing the audio signal, and sends the verification code to the server for verification; and the server allows the device to be authorized to log in after the verification succeeds. In the present disclosure, an authorized device near the device to be authorized can receive the verification code sent by the server, and then broadcast, based on near-field acoustic communication, the audio signal including the verification code; and the device to be authorized extracts the verification code from the sensed audio signal, and automatically sends the verification code to the server for verification, thereby implementing more intelligent cross-device login authentication without secondary user intervention, reducing authorization costs, and improving operation efficiency and user experience.