Multi-Step Touch Unlock Interface for Portable Devices
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Solution Overview
Problem
Touch-sensitive displays on portable devices often lead to unintentional activation or deactivation of functions due to accidental contact, and existing unlocking methods, such as PINs or gestures, can be burdensome and insecure, making it difficult to balance user convenience and device security.
Innovation Solution
A method involving a touch-sensitive display that presents an unlock interface with graphical, interactive category and subcategory images, where users must correctly select and input category, subcategory, and value information matching stored credentials to unlock the device, with magnification and secure lock interfaces used for incorrect attempts to enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional unlocking methods (PIN, password, gesture) are used, then device security is improved, but user convenience deteriorates due to burden of memorization and entry
Solution Approach 1:
The unlock interface is segmented into multiple interactive elements (category images, subcategory images, value images) that divide the unlocking process into distinct stages. This segmentation allows the system to present a structured, multi-step authentication process that is both secure and guided, improving user convenience while maintaining security through organized credential verification.
Solution Approach 2:
The patent introduces an intermediary graphical interface system that mediates between the user and the security credentials. Instead of directly entering PINs or passwords, users interact with category images, subcategory images, and value images that serve as intermediaries, making the authentication process more intuitive and easier to operate while preserving security.
2Ease of operation
If simple unlocking procedures are used, then user convenience is improved, but device security deteriorates due to ease of guessing
Solution Approach 1:
The patent adds dimensional complexity to the unlocking process by introducing multiple levels of interaction (category selection, subcategory selection, value input) rather than a single-dimensional PIN or password entry. This multi-dimensional approach significantly increases the difficulty of guessing while maintaining ease of operation for authorized users who know the correct sequence.
Solution Approach 2:
The system provides feedback through the interactive interface, guiding users through the unlocking process with visual cues from category images, subcategory images, and value images. This feedback mechanism ensures users understand what information is required at each step, improving convenience while the multi-step nature of the feedback process enhances security against guessing attacks.
3Reliability
If multiple interactive elements are added to unlock interface, then security is improved through multiple actions, but device complexity increases
Solution Approach 1:
The complex authentication process is segmented into manageable interactive elements (category images, subcategory images, value images), each serving a specific function. This segmentation reduces the perceived complexity by breaking down the multi-step process into clear, discrete actions while maintaining high security through the combination of multiple verification steps.
4Ease of operation
If touch-sensitive display is used, then user interface usability is improved, but unintentional activation increases due to accidental contact
Solution Approach 1:
The patent utilizes the touch-sensitive display's capability to detect multiple dimensions of user interaction (location, sequence, combination of touches) rather than relying on simple single-point contact. This multi-dimensional touch detection allows the system to distinguish between intentional unlocking attempts and accidental contacts, maintaining high usability while reducing unintentional activation.
Data Source
AI summary
The disclosure provided herein includes a multi-step authentication process to unlock a portable electronic device. To unlock the device, a user can use a touch screen on the device to select an access category, to select an access subcategory, and to enter an access subcategory value. The access subcategory can depend on the access category, making them logically related. The access subcategory value can be a value that corresponds to the selected access category and subcategory. The multi-step authentication or unlocking process can advantageously be easy to remember because the pieces of information to be provided are logically related to one another. In addition, the multi-step authentication or unlocking process can be difficult to guess as each step in the process decreases the chances an unwanted person or system correctly guesses the correct values for each step.