Vehicle Password Entry Display Using Dual Moving Indicators
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Solution Overview
Problem
In vehicles, when a user inputs a password on a terminal device, there is a risk that others in the vehicle may inadvertently see the password due to the lack of privacy in displaying the characters to be input, compromising security.
Innovation Solution
A vehicle system with a display and dial input device, where a controller shows multiple characters, a primary indicator, and secondary indicators, changing their positions based on user input, ensuring the user knows the selected character while others do not, by visually distinguishing and moving the indicators in a coordinated manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display shows only one indicator indicating the character to be input, then the user can easily identify the selected character, but others in the vehicle can also see which character will be input, compromising password security
Solution Approach 1:
The patent introduces a second indicator as an intermediary element that masks the true character selection. The first indicator shows the character the user intends to input, while the second indicator (showing a different character) is displayed to outsiders to prevent them from knowing the actual password character being entered. This mediator approach resolves the contradiction by allowing clear user identification while preventing external observation of the password input.
2Object-affected harmful factors
If the display shows multiple indicators to confuse others, then password security is improved, but the user cannot easily determine which character is actually selected
Solution Approach 1:
The patent applies local quality by giving different visual characteristics to different indicators. The first indicator is displayed with a first visual characteristic (e.g., first color) that the user can recognize, while the second indicator is displayed with a second visual characteristic (e.g., second color different from the first) that confuses outsiders. This allows the user to easily identify the correct character through the distinctive visual property while others see multiple indicators with different appearances and cannot determine the actual selection.
3Device complexity
If the indicators are displayed in fixed positions, then the display is simple and stable, but the user experience is boring and less engaging
Solution Approach 1:
The patent implements dynamics by allowing the indicators to move between different positions on the display based on user input through the dial input device. As the user rotates the dial, the indicators dynamically change their positions to correspond to different characters in the password input sequence. This dynamic behavior enhances user engagement and provides a more interactive experience while maintaining relatively simple display hardware.
Data Source
AI summary
The vehicle includes a display, a dial input device configured to receive a first input from a user, and a controller configured to control the display based on the first input, wherein the controller is configured to control the display to display a plurality of characters, a first indicator indicating one character among the plurality of characters, and a second indicator indicating at least one character not indicated by the first indicator among the plurality of characters, controls the display to change the characters indicated by the first indicator and the second indicator based on the first input, and determines the character indicated by the first indicator as the character selected by the user based on the second input.