3D Graphical Code Authentication via Touch Surface Depth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current two-dimensional authentication systems on devices, such as touch screens, limit security options and may not provide sufficient protection for sensitive information stored on computers and portable devices.
Innovation Solution
A method and device that utilize a three-dimensional authentication code, incorporating pressure and distance values to generate a graphical code that extends beyond the plane of the touch surface, enhancing security by adding a third dimension to the input process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a two-dimensional authentication system is used on a touch screen, then the device complexity is reduced and ease of operation is improved, but security reliability is insufficient
Solution Approach 1:
The patent transitions from two-dimensional touch screen authentication to three-dimensional authentication by adding depth information. The graphical code is rendered with varying depths (first level, second level, third level) that correspond to different pressure levels or distances, creating a 3D authentication pattern that cannot be replicated on a flat 2D surface.
Solution Approach 2:
The system changes the authentication parameters from purely 2D coordinates (x, y) to 3D parameters (x, y, z) where z represents depth, pressure level, or distance. This parameter expansion allows the same touch screen hardware to provide enhanced security through multi-level authentication without adding physical hardware components.
2Reliability
If a three-dimensional authentication code is implemented, then authentication security is enhanced, but device complexity increases
Solution Approach 1:
The touch screen device performs multiple functions: it detects 2D touch positions, measures pressure levels, and/or detects distance to create a 3D authentication code. The same hardware components (touch sensor, processor, display) handle both the graphical rendering and the authentication verification, eliminating the need for separate 3D sensing hardware.
Solution Approach 2:
The system uses the touch screen's inherent capabilities (pressure sensing, distance measurement) to generate the 3D authentication code without requiring external 3D sensing devices. The display itself renders the 3D graphical code, and the same display shows guiding images that change characteristics based on the authentication state.
3Reliability
If pressure and distance values are used to generate graphical codes, then authentication complexity is increased, but ease of operation may be reduced
Solution Approach 1:
The system provides visual feedback through guiding images that change characteristics based on the authentication state. The display shows guiding images at different levels that respond to user input, helping users understand what actions are expected and confirming their progress through visual cues that change with the authentication process.
Solution Approach 2:
The system displays guiding images before authentication begins, showing users the expected pattern and interaction flow. This preliminary visualization helps users understand the 3D authentication process and reduces confusion during actual use.
Data Source
AI summary
The present invention relates to a method and arrangement for providing access to a device, the method comprising: receiving via a touch surface information, at least partly comprising a graphical code, said code comprising at least two parts, a first part relating to a first physical value on said touch surface and a second part relating to a second physical value on said touch surface, and generating a graphical code based on said first and second physical values, said graphical code having at least one portion deviating from a plane extension of said touch surface.