Shared Playback Session Joining via Timed Shake Authentication
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Solution Overview
Problem
Existing systems lack efficient methods for users to easily join shared playback sessions on nearby devices, particularly through convenient and secure authentication processes.
Innovation Solution
Utilizing a predefined gesture, such as a shake movement, to authenticate and allow devices to join a shared playback session, ensuring that the gesture is detected within a threshold time frame to facilitate seamless session joining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional authentication methods are used for joining shared playback sessions, then security is maintained, but user convenience and ease of operation deteriorate
Solution Approach 1:
The system enables self-service authentication where the host device automatically validates the guest device through mutual gesture detection. The host device monitors for the predefined gesture from the guest device and automatically initiates the joining process without requiring manual intervention, thus simplifying the operation while maintaining security through the gesture-based verification mechanism
Solution Approach 2:
The patent replaces traditional mechanical authentication systems (physical buttons, switches, or manual pairing processes) with a gesture-based detection system. The predefined gesture serves as a non-contact, intuitive input method that is easier to perform than physical manipulation of device components, thereby improving ease of operation without compromising security
2Productivity
If manual authentication processes are used, then security is ensured, but time consumption and productivity worsen
Solution Approach 1:
The host device performs preliminary actions by continuously monitoring for the predefined gesture and pre-establishing the validation framework before the guest device needs to join. This preparation work is done in advance, so when the gesture is detected, the authentication process can be immediately completed without time-consuming manual steps
Solution Approach 2:
The system allows the authentication process to be rushed through by detecting the predefined gesture as a sufficient condition for immediate validation. Once the gesture is detected within the threshold time period, the system skips intermediate authentication steps and directly completes the joining process, significantly reducing the time required
3Ease of operation
If gesture-based authentication is implemented, then ease of operation improves, but reliability and security may worsen
Solution Approach 1:
The system dynamically adjusts the threshold time period based on the detection of gestures. The threshold acts as a dynamic parameter that allows flexibility in timing while maintaining security - it accommodates natural variations in gesture execution speed but prevents premature or delayed false positives, thus balancing ease of operation with authentication reliability
Solution Approach 2:
The system implements feedback mechanisms where the host device receives and processes gesture detection information from the guest device. This feedback loop allows the system to verify the gesture within the threshold time period and confirm successful authentication, ensuring reliability while maintaining the simplicity of the gesture-based interface
4Ease of operation
If simple gesture detection is used, then ease of operation improves, but precision of authentication worsens
Solution Approach 1:
The threshold time period serves as a dynamic parameter that enhances measurement precision without complicating the gesture itself. By defining a specific time window for gesture detection, the system can more accurately distinguish intentional authentication gestures from accidental movements, thereby improving detection accuracy while keeping the gesture simple and easy to perform
Data Source
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AI summary
A method includes, while a first user associated with a first user device is participating in a first shared playback session and a second user associated with a second user device is not participating in the first shared playback session: detecting one or more of (i) a first shake movement of the first user device or (ii) a second shake movement of the second user device. The method includes, in accordance with a first determination that the first shake movement is detected within a threshold time period of detecting the second shake movement, adding the second user to the first shared playback session; and in accordance with a second determination that the first shake movement is not detected within the threshold time period, forgoing adding the second user to the first shared playback session.