Dynamic Privacy Screen Spectator Detection

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Solution Overview

Problem

Current solutions for preventing visual hacking in public settings are either permanent and restrictive or temporary and ineffective, as they do not react to the presence of potential threats, compromising user privacy and visibility.

Innovation Solution

A system that monitors the viewpoints of spectators using a device with a processor, front-facing display, IR camera, and power supply, altering or censoring content based on the presence of spectators within predetermined viewing angles to ensure privacy, with user-configurable and toggleable settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If permanent privacy screens are applied to limit viewing angles, then privacy protection is improved, but viewing flexibility and multi-user visibility deteriorate

Engineering Contradiction:
Improveprivacy protectionVSAvoidviewing flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by making the privacy protection mechanism adjustable and responsive rather than fixed. The system dynamically modifies display content based on detected spectator presence, allowing the privacy level to adapt to different situations. Users can toggle between private and public modes, and the system reacts in real-time to environmental conditions, resolving the contradiction between permanent protection and viewing flexibility.

Inventive Principle:
Principle #15Dynamics

2Reliability

If colored pattern layers are applied to deter spectators, then privacy protection is improved, but content visibility and color accuracy deteriorate

Engineering Contradiction:
Improveprivacy protectionVSAvoidcontent visibility
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system dynamically applies privacy protection only when spectators are detected, rather than maintaining a constant visual barrier. The display content remains unobscured during private use, preserving full visibility and color accuracy. When threats are detected, the system transitions to private mode with appropriate content modification, thus resolving the contradiction between continuous protection and information loss.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent extracts the privacy protection mechanism from being a permanent visual overlay and makes it a conditional response. Instead of always applying colored patterns that obscure content, the system only modifies display content when spectator presence is detected, separating the privacy function from continuous visual interference and eliminating unnecessary information loss.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If reactive spectator detection is implemented, then privacy protection effectiveness is improved, but device complexity and energy consumption increase

Engineering Contradiction:
Improveprivacy protection effectivenessVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent leverages existing multi-functional components already present in modern devices. The camera system, already used for selfies and video calls, is repurposed to detect spectator presence. The display system, already capable of showing various content, is enhanced with conditional modification capabilities. This approach improves privacy effectiveness without significantly increasing device complexity, as existing components serve multiple functions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Effectively prevents visual hacking by dynamically adjusting the content's visibility to protect user privacy without permanently restricting viewing angles, ensuring secure browsing in public settings while allowing visibility when desired.

Implementation Method 1

monitors the viewpoints of spectators using a device with a processor, front-facing display, IR camera

Methodology Applied
Scientific EffectInfrared radiation detection: Infrared Radiation

Data Source

PatentUS11429754B2System to prevent visual hacking
Publication Date: 2022.08.30 TAHSIN NABI
  • US11429754B2 patent drawing
  • US11429754B2 patent drawing
  • US11429754B2 patent drawing

AI summary

The proposed technology enables new levels of privacy while using electronics in open or public settings via the modification and censorship of a device's displayed content in response to the presence of spectators within a visible range of content displayed. In an open or public environment, users of electronic devices with any form of display can have their privacy and security compromised by any unauthorized spectators within the aforementioned visible range. To combat this problem, the proposed technology monitors the presence of users and spectators within predetermined regions and changes the content displayed appropriately such that the spectators are deterred or prevented from viewing the user's (or users) content. The system provides an added layer of security which is advantageous to users who prefer to use their devices in public locations but are afraid of being visually hacked. The proposed technology would also prove useful on devices which are permanently situated in public locations (ATM's, public computers, etc.).