Contactless Smartcard Enrollment Aid With Wireless Power Alignment

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Solution Overview

Problem

Challenging to provide secure, reliable, and convenient biometric enrollment for devices with limited user interfaces, such as contactless smartcards, due to the complexity of aligning and interacting with these devices during the enrollment process.

Innovation Solution

An enrollment assistance device with a carrier having separate surface portions for the user device and contactless smartcard, equipped with wireless power transfer arrangements and a conductor connecting them, enabling power transfer and guided alignment through a mobile device interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If visual markers are displayed on the mobile device screen to guide smartcard positioning, then alignment accuracy is improved, but user operation complexity increases due to the need to press the smartcard against the backside while following instructions on the frontside display

Engineering Contradiction:

Improvealignment accuracyVSAvoiduser operation complexity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The system separates the guidance display (frontside) from the positioning target (backside visual marker), allowing the user to view instructions on the frontside while simultaneously aligning the smartcard with the markers visible on the backside through the transparent or translucent display area.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The display screen acts as an intermediary that transmits visual alignment markers from the backside to the frontside, enabling the user to see both the alignment targets and the instructional guidance simultaneously without needing to switch between views or manually position the card while reading instructions.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the smartcard has no integrated user interface, then device simplicity is improved, but enrollment guidance capability deteriorates

Engineering Contradiction:

Improvedevice simplicityVSAvoidenrollment guidance capability

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The mobile device serves as an intermediary that provides the user interface and enrollment guidance, while the smartcard remains a simple biometric sensing device without its own display or interface elements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The mobile device performs multiple functions: it displays enrollment instructions, shows alignment markers, provides biometric template quality feedback, and communicates with the smartcard, consolidating all user interface functions in a single device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If wireless power transfer is implemented between user device and smartcard, then enrollment convenience is improved, but energy consumption increases

Engineering Contradiction:

Improveenrollment convenienceVSAvoidenergy consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

Wireless power transfer maintains continuous power supply to the smartcard throughout the enrollment process, eliminating the need for manual connection/disconnection of power sources and enabling uninterrupted biometric data capture.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The patent replaces mechanical contact-based power transfer with wireless electromagnetic field-based power transfer, eliminating the need for physical connectors or battery compartments in the smartcard.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Facilitates user-friendly biometric enrollment by allowing contactless smartcard alignment without manual handling, reducing enrollment time and improving template quality while being cost-effective and environmentally friendly.

Implementation Method 1

a first wireless power transfer arrangement supported by the carrier and arranged to form a first wireless power transfer link with the wireless power transfer arrangement of the user device... a second wireless power transfer arrangement supported by the carrier and arranged to form a second wireless power transfer link with the wireless power transfer arrangement of the contactless smartcard

Methodology Applied

Scientific EffectWireless power transfer: Electromagnetic Induction

Data Source

PatentUS12452237B2Biometric system comprising a contactless smartcard and an enrollment assistance device, and a method for enrolling a user having the system

Publication Date: 2025.10.21 FINGERPRINT CARDS ANACATUM IP AB

AI summary

An enrollment assistance device comprising a carrier with a first surface portion for a user device, and a second surface portion for a contactless smartcard; a first wireless power transfer arrangement supported by the carrier and arranged in the first surface portion of the carrier; a second wireless power transfer arrangement supported by the carrier and arranged in the second surface portion of the carrier; and a conductor arrangement supported by the carrier and conductively connecting the first wireless power transfer arrangement and the second wireless power transfer arrangement.