Authentication Control Device Using Depth Perception for Human Verification
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Solution Overview
Problem
CAPTCHA techniques face challenges in making character sequences difficult for machines to recognize while remaining accessible for humans, leading to potential obstruction of legitimate user access and convenience.
Innovation Solution
An authentication control device and method utilizing an authentication image that causes depth perception, allowing users to input at positions with different apparent depths, thereby distinguishing human inputs from machine inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If character sequence is distorted or processed to be unrecognizable by machines, then machine recognition accuracy is reduced, but human recognition becomes difficult and legitimate user access is obstructed
Solution Approach 1:
The patent transitions from two-dimensional character sequences to three-dimensional spatial positioning by displaying characters at different apparent depths in the authentication image. Humans can easily perceive depth and identify characters at specific depth levels, while machines struggle to accurately detect and interpret this depth information, thus resolving the contradiction between machine recognition difficulty and human recognition ease
2Reliability
If character sequence is made more difficult to recognize to cope with increasing machine precision, then machine spoofing is prevented, but user convenience is impaired
Solution Approach 1:
The patent applies different depth characteristics to different characters or character groups within the authentication image. By assigning specific depth levels to particular characters, the system creates local variations in depth that humans can easily perceive and use for identification, while machines find it difficult to systematically process these localized depth patterns, thereby maintaining both security and user convenience
Data Source
AI summary
In one aspect, the provided is an authentication control device including: receiving means for receiving an input associated with at least one position among a plurality of positions that are included in an authentication image causing a viewer to perceive depth and are at different apparent depths; and determination means for determining, based on the input, whether or not the input is made by a human.