Depth-Based User Authentication for Mobile Devices
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Solution Overview
Problem
Conventional mobile device authentication methods, such as pattern-based systems, are computationally intensive, time-consuming, inconvenient, and prone to security weaknesses like fingerprint smudges, which compromise security.
Innovation Solution
Implementing depth-based user authentication using a mobile computing device with a 3D camera to determine a password based on the relative depths of objects selected in a login image, eliminating the need for repetitive touch inputs and enhancing security by utilizing depth information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pattern-based authentication is used, then user authentication can be performed, but fingerprint smudges are left on the touchscreen which compromise security
Solution Approach 1:
The patent replaces the mechanical touch-based authentication system with an optical depth-based system. Instead of requiring physical contact with the touchscreen, the system uses a depth sensor to detect the three-dimensional position of the user's finger in space above the screen, eliminating fingerprint smudges while maintaining authentication capability.
Solution Approach 2:
The patent transitions from two-dimensional touchscreen interaction to three-dimensional spatial recognition. By utilizing the depth dimension (Z-axis) to detect finger position, the system enables authentication without requiring the finger to contact the screen surface, thus preventing fingerprint smudge contamination.
2Reliability
If text-based password entry is used, then authentication can be performed, but it is computationally intensive and time consuming
Solution Approach 1:
The patent replaces the computationally intensive text-based input system with an optical depth-sensing system. The depth sensor captures the spatial position of the user's finger in three-dimensional space, and this positional data is directly mapped to authentication credentials, eliminating the need for complex computational processing of text input while reducing authentication time.
3Ease of operation
If pattern swiping is used, then authentication can be performed, but it involves repetitive touching of the same touchscreen portions which creates security vulnerabilities
Solution Approach 1:
The patent elevates the authentication interaction from two-dimensional screen surface to three-dimensional space. Instead of swiping patterns on the screen that require repeated contact with specific areas, the system detects the spatial trajectory of the finger in 3D space, maintaining user convenience while eliminating security vulnerabilities associated with fingerprint accumulation on the touchscreen surface.
Data Source
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AI summary
Technologies for depth-based user authentication include a mobile computing device to display a login image including a depth channel on a display of the mobile computing device. The mobile computing device determines a selection of a plurality of objects of the login image made by a user of the mobile computing device, generates a user-selected password based on a relative depth of each object of the plurality of objects selected by the user, and permits access to the mobile computing device in response to a determination that the user-selected password matches a device login password.