Variable-Opacity ATM Privacy Panels for Secure Public Transactions

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Solution Overview

Problem

Existing ATMs lack effective privacy measures to protect sensitive user information from being viewed by others in crowded public areas, while maintaining visibility and usability.

Innovation Solution

Incorporation of privacy panels with variable opacity, controlled by a computing device, using materials like PLEXIGLAS LED or PDLC films, and lighting elements to adjust transparency and emit colors for enhanced privacy and visibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If privacy panels with variable opacity are added to protect user information, then user privacy is improved, but device complexity increases

Engineering Contradiction:
Improveprivacy protectionVSAvoiddevice complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The privacy panel incorporates variable opacity capability through materials such as PDLC (polymer dispersed liquid crystal) film or PLEXIGLAS LED, allowing the panel to dynamically change between transparent and opaque states. This dynamic property enables the panel to adapt to different operational states of the ATM, providing privacy protection when needed while maintaining visibility when not in use, thus resolving the contradiction between privacy protection and device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The privacy panel changes its optical parameters (opacity/transparency) in response to different operational conditions. When the ATM is in use, the panel becomes opaque to protect user information; when not in use, it becomes transparent to allow visibility. This parameter change capability enables the system to provide privacy protection only when necessary, reducing the overall complexity burden.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If privacy panels are made opaque to protect information, then privacy protection is improved, but visibility and usability deteriorate

Engineering Contradiction:
Improveprivacy protectionVSAvoidvisibility and usability
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The privacy panel is designed to dynamically adjust its opacity based on the operational state of the ATM. It transitions from transparent to opaque when the ATM is in use, and returns to transparent when not in use. This dynamic adjustment ensures that privacy protection is activated only when necessary, maintaining ease of operation and visibility during non-operational periods.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The privacy panel operates in periodic cycles, alternating between transparent and opaque states according to the ATM's usage pattern. This periodic action ensures that the panel provides privacy protection during transaction periods while maintaining visibility during idle periods, thus resolving the contradiction between privacy protection and ease of operation.

Inventive Principle:
Principle #19Periodic action

3Illumination intensity

If lighting elements are added to provide visibility cues, then visibility is improved, but device complexity increases

Engineering Contradiction:
ImprovevisibilityVSAvoiddevice complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The lighting elements are integrated directly into the privacy panel structure, merging the lighting function with the privacy panel itself. This integration reduces the need for separate lighting components and simplifies the overall device architecture. The lighting elements are embedded within or behind the variable opacity panel, creating a unified structure that provides both privacy protection and visibility cues.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The privacy panel serves multiple functions: it provides privacy protection through variable opacity, acts as a structural component of the ATM, and incorporates lighting elements for visibility cues. This multi-functionality reduces the need for additional separate components, thereby minimizing the increase in device complexity while achieving improved visibility.

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

Enhances user privacy by selectively varying opacity and providing visibility cues, ensuring secure transactions in public spaces.

Implementation Method 1

The at least one privacy panel can be configured to have a variable opacity. The at least one computing device is engaged with the at least one privacy panel to selectively vary the opacity of the at least one privacy panel.

Methodology Applied
Scientific EffectVariable opacity control: Liquid Crystals

Implementation Method 2

When a user is not present at the ATM, the computing device can control the one or more lighting elements to emit light. The panel material (PLEXIGLAS LED or PDLC films) diffuses light to provide visibility cues while maintaining privacy when opaque.

Methodology Applied
Scientific EffectLight scattering: Scattering

Implementation Method 3

Incorporation of privacy panels with variable opacity, controlled by a computing device, using materials like PLEXIGLAS LED or PDLC films, and lighting elements to adjust transparency and emit colors for enhanced privacy and visibility.

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentEP4722798A2ATM having privacy panels
Publication Date: 2026.04.08 DIEBOLD NIXDORF SYST GMBH
  • EP4722798A2 patent drawingFigure 1
  • EP4722798A2 patent drawingFigure 2
  • EP4722798A2 patent drawingFigure 3

AI summary

An automated transaction machine (ATM) is disclosed, the ATM comprising at least one user interface; at least one computing device arranged in communication with said at least one user interface; at least one privacy panel disposed on a side of said user interface, wherein said at least one privacy panel is configured to have a variable opacity and wherein said at least one computing device is engaged with said at least one privacy panel to selectively vary the opacity of said at least one privacy panel; and at least one lighting element positioned adjacent to an edge of said at least one privacy panel, said at least one lighting element configured to selectively emit light and controlled by said at least one computing device.