Remote Screen Privacy Overlay for Secure Device Maintenance
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Solution Overview
Problem
Remote mobile device maintenance poses challenges in maintaining privacy and security, as on-site situations can be difficult to manage, especially in public places where sensitive operations are visible, increasing the risk of information leakage.
Innovation Solution
A remote control-based method that involves superimposing a floating layer on the controlled terminal's screen to obscure its content, taking a screenshot, and adjusting brightness to restore visibility on the controlling terminal, ensuring information security through a safe mode and various permission-based processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the screen of the controlled terminal is made visible during remote control, then maintenance personnel can view the screen content, but unauthorized observers can also see sensitive information
Solution Approach 1:
The patent applies local quality by creating different visibility states for different observers. The floating layer with adjustable transparency allows the screen content to be visible to the controlling terminal (maintenance personnel) while appearing black or obscured to local observers (unauthorized users). This is achieved by setting the floating layer transparency to allow remote viewing while blocking local viewing, thus resolving the contradiction between screen visibility for maintenance and information security.
Solution Approach 2:
The patent introduces a floating layer as an intermediary element between the screen content and observers. This floating layer acts as a mediator that selectively controls visibility: it allows the controlling terminal to view the screen content through transparency adjustment while preventing unauthorized local observers from seeing sensitive information. The intermediary layer thus resolves the contradiction by providing differential visibility access.
2Loss of information
If screenshot brightness is adjusted to restore visibility, then maintenance personnel can view obscured content, but processing complexity increases
Solution Approach 1:
The patent applies parameter changes by adjusting the brightness parameter of the screenshot to restore visibility of obscured content. When the floating layer obscures the screen content, the system captures a screenshot and then modifies its brightness parameter to make the content visible again for the controlling terminal. This parameter adjustment resolves the contradiction between maintaining content obscuration for security and restoring readability for maintenance personnel.
Data Source
AI summary
A remote control-based method for protecting information on a device screen is provided. A controlling terminal controls a controlled terminal through a remote control system, and the remote control-based method specifically includes the following steps: S1: superimposing a floating layer on a content page of a screen of the controlled terminal; S2: adjusting transparency of the floating layer to allow the content page on the screen of the controlled terminal to be invisible; S3: taking a screenshot of the controlled terminal; and S4: adjusting brightness of the screenshot to restore the content page to be normally visible and displayed at the controlling terminal. The remote control-based method can prevent screen information on a remote device from being disclosed, provide a more secure and private environment for a remote control process, and protect the security of information.