Auxiliary Device Login Using Dynamic Screen Frame Matching
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Solution Overview
Problem
Existing authentication methods for auxiliary devices in entertainment systems, such as games consoles, are inconvenient and vulnerable to security breaches, particularly when using QR codes or static images, which can interfere with user experience and compromise personal information.
Innovation Solution
An authentication method that uses frame- or feature-matching of dynamic content displayed on an already-authenticated device, allowing auxiliary devices like mobile phones to log in securely without manual input by capturing and comparing image frames or features, optionally incorporating audio verification and personalized visual identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If QR code or static image authentication is used, then the login process is streamlined, but security is compromised and user experience is interfered with
Solution Approach 1:
The patent transforms static authentication images into dynamic video content authentication. The secondary device captures video frames from the primary device's display, and these dynamic frames are compared against expected content. This dynamic approach prevents screenshot circumvention while maintaining streamlined authentication, resolving the security versus ease of operation contradiction.
Solution Approach 2:
The patent replaces the mechanical/optical QR code scanning system with a video content recognition system. Instead of using visual patterns that can be photographed and reused, the system uses dynamic video frame comparison, substituting the authentication mechanism to inherently prevent screenshot attacks while keeping the process user-friendly.
2Reliability
If QR code display is used for authentication, then security verification is achieved, but user experience is interfered with
Solution Approach 1:
The patent merges the authentication process with the existing video content display. Instead of showing a separate QR code that interrupts the user experience, the authentication data is embedded within the video content itself. The secondary device extracts and compares frames from this integrated display, achieving security verification without interfering with the user's viewing experience.
Solution Approach 2:
The video display serves multiple functions simultaneously: it displays the content the user wants to view and it provides the authentication data for verification. This multi-functionality eliminates the need for separate authentication displays, maintaining user experience while achieving security verification.
3Ease of operation
If screenshots of QR code are allowed, then ease of operation is maintained, but security measures are circumvented
Solution Approach 1:
By using dynamic video frames instead of static QR codes, the system makes screenshot capture ineffective. The authentication relies on temporal continuity and dynamic content comparison, so even if a screenshot is taken, it cannot be used for authentication because the expected frames are dynamic and time-dependent. This maintains convenience while preventing security circumvention.
Solution Approach 2:
The patent converts the potential harm of screenshot capability into a benefit by using video frame analysis. Instead of preventing screenshots entirely (which would complicate operation), the system uses the captured frames' temporal and content characteristics to verify authenticity. The very act of capturing frames becomes part of the verification process, turning a potential security vulnerability into a security feature.
Data Source
AI summary
A system for performing a login process for a user profile at an auxiliary device, the system comprising a first obtaining unit configured to obtain information associated with each of a plurality of image frames displayed by a first device, the first device being logged in with the user profile, a second obtaining unit configured to obtain a plurality of images captured by a camera associated with the auxiliary device, a comparison unit configured to compare the information associated with plurality of image frames displayed by the first device with a plurality of corresponding images captured by the camera to identify a degree of similarity for each corresponding image pair, wherein corresponding images are those associated with a same respective display and capture time, and an authentication unit configured to execute a login to the auxiliary device with the user profile in response to a determination that the degree of similarity meets or exceeds a threshold value for at least a subset of the plurality of corresponding image pairs.