Password Verification Device Using Dynamic Character Redistribution
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Solution Overview
Problem
Existing password verification methods in mobile terminals and electronic devices are susceptible to unauthorized access due to their visibility and ease of circumvention, lacking desirable security.
Innovation Solution
A password verification method and device that uses multiple interactive regions with randomly arranged characters, where user selections update the character distribution, ensuring that each character of a predefined password sequence is confirmed through successive selections, enhancing security and convenience by reducing the visibility of the input process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional password verification methods (slide-unlock, face-unlock, pattern unlock) are used, then user convenience is improved, but security is worsened due to visibility and ease of circumvention
Solution Approach 1:
The password input process is segmented into multiple steps where the user selects interactive regions containing character groups rather than directly inputting individual characters. This segmentation obscures the actual password from observers while maintaining user convenience through a structured selection process.
Solution Approach 2:
Interactive regions containing character groups serve as intermediaries between the user and the actual password. The user interacts with these regions rather than directly with password characters, providing a protective layer that prevents unauthorized observation while preserving ease of use.
2Device complexity
If mechanical password verification devices are used, then simplicity of structure is improved, but security is worsened due to visibility of input process
Solution Approach 1:
The patent introduces a spatial dimension to password verification by using multiple interactive regions arranged in space, each containing character groups. This spatial arrangement allows the input process to occur across multiple locations rather than a single linear sequence, obscuring the password from observers while maintaining structural simplicity.
3Ease of operation
If password characters are displayed in fixed positions, then ease of input is improved, but security is worsened due to predictability and observability
Solution Approach 1:
The patent implements dynamic repositioning of character groups within interactive regions. After each user selection, the character groups are randomly redistributed to new positions, making the input process unpredictable to observers while maintaining ease of input for the authorized user who knows the password sequence.
Data Source
AI summary
A password verifying method includes the following steps: providing a plurality of interactive regions in which several known password characters are arranged and shown randomly, at least one interactive region containing at least two characters; accepting selection of one of said plurality of interactive regions by a user, and after selection of one of the interactive regions by the user, randomly re-distributing said several known password characters into said interactive regions for subsequent selection by the user; and comparing characters contained in a predefined password sequence with characters contained in the interactive regions selected by the user, and outputting a signal representing a successful password verification when each character contained in the password sequence is identical to corresponding ones of the characters shown in respective ones of the interactive regions selected by the user.