Secure Viewing Indicator for Electronic Payment Terminals
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Solution Overview
Problem
Current electronic payment terminals lack a flexible and adaptable method to securely inform users of their operating mode, as existing techniques are inflexible and cannot prevent malicious applications from compromising security indicators.
Innovation Solution
A secure viewing method on electronic terminals that determines the operating mode and displays a visual indicator, modifying its parameters based on user actions and time, ensuring the indicator is discreet yet attention-catching when necessary, preventing malicious interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a banner indicator is permanently displayed on the screen to indicate operating mode, then users are informed of the security mode, but the display lacks flexibility and adaptability to different user situations
Solution Approach 1:
The patent implements dynamic display characteristics for the security indicator, including variable opacity, animation, and repositioning based on user actions. The indicator transitions from a static banner to a dynamic element that adapts its visibility and position in response to user interactions, resolving the contradiction between reliable indication and display flexibility
Solution Approach 2:
The patent changes multiple display parameters of the indicator including opacity, position, and animation state based on user actions. These parameter changes allow the same indicator to serve different communication purposes in different contexts, achieving both reliability and adaptability
2Reliability
If the indicator is always visible to ensure security awareness, then users are continuously informed of the mode, but user experience deteriorates due to constant distraction
Solution Approach 1:
The patent uses periodic or intermittent display of the indicator through animation and opacity changes rather than continuous static display. This periodic action maintains security awareness while reducing the constant visual distraction, improving user experience
Solution Approach 2:
The dynamic nature of the indicator allows it to be more prominent when security awareness is needed and less intrusive during normal operation, achieving a balance between reliability and ease of operation
3Reliability
If the indicator position is fixed to maintain consistency, then users can easily locate it, but the indicator may be obscured by application content or keyboard
Solution Approach 1:
The patent implements dynamic repositioning of the indicator based on the state of application content and keyboard. The indicator automatically adjusts its position to remain visible and accessible, resolving the contradiction between consistent location and visibility
Solution Approach 2:
The system monitors the state of application content and keyboard and uses this feedback to adjust indicator positioning. This feedback mechanism ensures the indicator remains visible without requiring complex manual configuration
4Reliability
If the indicator display is modified frequently to respond to user actions, then security communication is optimized, but system resources are consumed
Solution Approach 1:
The patent applies display modifications selectively based on the type and significance of user actions. Not all user actions trigger the same level of indicator modification, optimizing security communication while reducing unnecessary display updates and energy consumption
Data Source
Figure 1~2c
Figure 3a~4
AI summary
The invention relates to a method for secure viewing on a screen of an electronic terminal. According to the invention, the method includes: a step (11) for determining the mode of operation, secured or open, of said terminal; and a step (13) for modifying the displaying of at least one indicator representing said mode of operation of said terminal, said displaying modification step being controlled by at least one secure processor of said terminal and taking into account at least one predetermined action of said user on said terminal and/or of an expiration of at least one predetermined time limit.