Secure Handwriting Input for Password Fields Using Dynamic Obscuring
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Solution Overview
Problem
Handwriting input for password fields on touchscreen devices lacks security, as existing methods often disable handwriting mode for password entry, leading to unwieldy soft keyboard usage and exposure of password characters to observers.
Innovation Solution
A system and method for secure handwriting input that includes a processor, handwriting input unit, display, and privacy module to identify and obscure handwriting elements in password fields upon a predetermined trigger event, such as time expiration or subsequent input, ensuring password confidentiality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handwriting mode is enabled for password fields, then input efficiency and ease of operation are improved, but security and privacy are compromised due to visible password characters
Solution Approach 1:
The patent applies dynamics by making the visibility state of password characters changeable over time. The system dynamically switches between visible and obscured states based on trigger events such as time delays or user actions, allowing the password field to adapt its visibility characteristics to different operational contexts and security requirements
Solution Approach 2:
The patent changes the visibility parameter of the password field from a static state to a dynamic state. By modifying the display parameter (visible vs. obscured) based on trigger events, the system enables handwriting input mode while maintaining security through parameter transformation rather than physical changes to the input mechanism
2Object-affected harmful factors
If handwriting mode is disabled for password fields, then security is improved by preventing password exposure, but ease of operation deteriorates due to unwieldy soft keyboard usage
Solution Approach 1:
The system implements dynamic visibility control where the password field transitions between visible and obscured states based on trigger events. This dynamic approach enables the use of convenient handwriting input while maintaining security, as the visibility is not fixed but adapts to security requirements and user interactions
Solution Approach 2:
The system performs preliminary obscuring actions automatically based on predefined trigger events such as time delays or specific user actions. This preliminary action ensures that password exposure is prevented before it can be exploited, while still allowing the user to benefit from handwriting input convenience during the input process
3Ease of operation
If handwriting elements are displayed continuously, then ease of operation is improved for user feedback, but security deteriorates due to prolonged password visibility
Solution Approach 1:
The system applies periodic action by implementing time-based trigger events that cause the password field to switch between visible and obscured states. This periodic obscuring provides user feedback during input while ensuring that prolonged visibility does not compromise security, as the visibility is renewed only at specific intervals or upon user interaction
Solution Approach 2:
The system provides feedback through temporary visibility of handwriting elements during input, then transitions to obscured state to maintain security. The trigger event mechanism ensures that feedback is provided when needed (during input) while automatically switching to secure obscured state, creating a feedback loop that balances usability and security
Data Source
AI summary
For secure handwriting input for password fields, an apparatus for using a tone indicator to identify language in text recognition is disclosed. The apparatus may include a processor, a handwriting input unit operatively coupled to the processor, a display operatively coupled to the processor, a handwriting element module that identifies a handwriting element from handwriting input, an input replication module that controls the display to present the handwriting element, and a privacy module that controls the display to obscure the handwriting element in response to a predetermined trigger event. Obscuring the handwriting element may include removing the handwriting element, rendering transparent the handwriting element, replacing the handwriting element and an area surrounding the handwriting element with a colored area, and/or replacing the handwriting element with an anonymizing symbol. A method and computer program product also perform the functions of the apparatus.