Secure Smartphone–TV Association Using Credential and Feature Matching
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Solution Overview
Problem
Existing technologies struggle to efficiently associate devices like TVs and smartphones for personalized user interactions, particularly in scenarios requiring security and safety, as they often rely on insecure or cumbersome authentication methods.
Innovation Solution
A method involving a three-step association process where a smartphone sends authentication credentials to a TV, which verifies them using a public key and matches user features captured by sensors to ensure a secure and reliable user identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods are used for device association, then the association process is simple, but security and reliability are compromised
Solution Approach 1:
The authentication process is divided into distinct phases: initial association where credentials and verification elements are exchanged, and subsequent association where features are matched. This segmentation allows complex security measures to be implemented in manageable steps, improving reliability without overwhelming complexity in a single process.
Solution Approach 2:
Verification elements and initial credentials are exchanged and stored during the initial association phase before the actual authentication occurs. This preliminary action enables the system to perform secure feature matching in subsequent associations, enhancing security while reusing established credentials.
2Reliability
If multiple authentication checks are performed, then security is improved, but the association time increases
Solution Approach 1:
Verification elements are exchanged and credentials are stored during the initial association phase. This preliminary setup allows the system to perform authentication checks faster in subsequent associations, as the verification elements are already in place and don't need to be re-exchanged.
Solution Approach 2:
The system uses feature matching feedback to determine whether to proceed with full authentication or allow quick association. When features match the stored verification elements, the system can expedite the association process, reducing time while maintaining security through the feedback loop.
Data Source
AI summary
According to an embodiment, a first device may receive from a second device a message comprising an authentication element and credentials associating the second device with a user identifier. The first device may obtain a set of features based on data captured by a sensor of the first device when a user is near the sensor. The first device may associate the second device with the first device on a condition that is it determined by the first device that the authentication element is verified based on a verification element, that the credentials correspond to initial credentials associating the second device with the user identifier, and that the set of features matches an initial set of features, wherein the verification element, the initial credentials and the initial set of features may have been initially associated together in the first device.