Foldable Mobile Card Alignment for Secure NFC Authentication

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Solution Overview

Problem

Existing methods for contactless card authentication in foldable mobile devices are inefficient and prone to security vulnerabilities, as they rely on insecure login credentials and lack proper alignment mechanisms for optimal NFC communication.

Innovation Solution

A foldable mobile device design with a screen interface and alignment feature that provides feedback on card placement, ensuring proper alignment and secure data transmission between a contactless card and the device's screen interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional login credentials are used for authentication, then device accessibility is maintained, but security vulnerability increases

Engineering Contradiction:

ImprovesecurityVSAvoidauthentication convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces traditional mechanical credential-based authentication (usernames and passwords) with contactless NFC-based authentication. The system uses a contactless card reader to communicate with a contactless card, eliminating the need for users to enter credentials manually. This substitution of authentication mechanisms maintains ease of operation while significantly improving security through contactless technology.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If contactless card alignment is not provided, then device structure remains simple, but NFC communication efficiency decreases

Engineering Contradiction:

ImproveNFC communication efficiencyVSAvoidalignment mechanism complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements alignment features (such as alignment marks or indicators) on the contactless card that correspond to specific regions on the display screen. These preliminary alignment indicators guide users to position the card correctly before NFC communication begins, ensuring optimal communication efficiency without requiring complex automated alignment mechanisms.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces alignment marks or indicators as intermediary elements between the contactless card and the display screen. These intermediary features facilitate proper positioning and alignment, acting as mediators that enable efficient NFC communication while keeping the overall device structure relatively simple.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If card alignment feedback is implemented, then data transmission accuracy improves, but user interaction complexity increases

Engineering Contradiction:

Improvecard alignment precisionVSAvoiduser interaction simplicity

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent provides visual feedback to users through the display screen, showing alignment indicators or guides that help users position the contactless card correctly. This feedback mechanism improves alignment precision by guiding users through the positioning process while maintaining simple user interaction, as the feedback is presented in an intuitive visual format that requires no additional user input.

Inventive Principle:

Principle #23Feedback

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 data security and transaction integrity by ensuring accurate alignment and efficient NFC communication, reducing fraud through selective data transmission based on device recognition.

Implementation Method 1

contactless card alignment with a foldable mobile device... contactless card is uncovered by the second component in the first configuration and covered by the second component in the second configuration

Methodology Applied

Scientific EffectNFC (Near Field Communication): Electromagnetic Induction

Data Source

PatentUS12536392B2Devices and methods for contactless card alignment with a foldable mobile device

Publication Date: 2026.01.27 CAPITAL ONE SERVICES LLC

AI summary

Example embodiments of systems, methods, and devices for transaction card alignment are provided. In one example embodiment, a mobile device may include a first component and a second component foldable with respect to one another between a first configuration and a second configuration. The mobile device may further include a screen interface on an interior side of the first component, and an alignment feature along the interior side, the alignment feature providing alignment for a contactless card with respect to the screen interface, wherein the contactless card is uncovered by the second component in the first configuration and covered by the second component in the second configuration.