Touchscreen Character Confirmation for Accurate Password and SSID Entry
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Solution Overview
Problem
Smart devices face challenges in accurately inputting character strings, such as passwords or SSIDs, due to the difficulty of blind touch on small software keyboards, leading to potential erroneous inputs as users focus on the keyboard and fail to notice mistakes.
Innovation Solution
A display device with a touch panel that includes a character input area and an input character string display area, where input characters are accompanied by confirmation information, such as phonetic codes or replacement characters, retrieved from a database to confirm correctness, reducing erroneous inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a software keyboard is used on a small display area, then the device can be compact and portable, but the user cannot perform blind touch and may notice erroneous input
Solution Approach 1:
The display area is segmented into multiple regions: a character input area displaying the software keyboard, and an input character string display area showing the entered characters with confirmation information. This segmentation allows the user to simultaneously view both the keyboard and the input characters, enabling error detection without sacrificing device compactness.
2Reliability
If the input character is displayed directly, then the user can confirm the input, but security is compromised for sensitive information
Solution Approach 1:
Different display qualities are applied to different characters based on their sensitivity. Confirmation information (such as phonetic codes or visual representations) is displayed for less sensitive characters, while highly sensitive characters remain hidden or shown only as asterisks. This local differentiation allows users to confirm inputs where appropriate while maintaining security for sensitive information.
Solution Approach 2:
The system provides visual feedback by displaying confirmation information alongside input characters. This feedback mechanism allows users to verify their inputs in real-time without necessarily displaying the actual sensitive characters, thus balancing confirmation needs with security requirements.
3Productivity
If the user focuses on the software keyboard, then input can be made, but the user may not notice erroneous input
Solution Approach 1:
The solution adds a spatial dimension to the input interface by displaying confirmation information in a separate area adjacent to the character input area. This dimensional arrangement allows users to glance at both the keyboard and the input characters simultaneously, maintaining input speed while improving accuracy through enhanced visual awareness.
Data Source
AI summary
A display device includes: a display unit including a touch panel; and a control unit configured to display, on the display unit, a character input area in which a soft key is arranged, repeatedly receive, from the character input area, an operation for inputting an input character, and display, on the display unit, an input character string display area in which a character string that is a sequence of the input character is displayed. The control unit is configured to arrange in order, in the input character string display area, one of the input character and a replacement character for replacing the input character, acquire from a database including input character confirmation information for confirming a character, when receiving the operation for inputting the input character from the character input area, the input character confirmation information corresponding to the input character, and display the acquired input character confirmation information on the display unit.