Contactless Card Biometric Controls for Dynamic Spending Limits

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Solution Overview

Problem

Credit and debit cards are vulnerable to theft and fraud, leading to significant financial losses, and setting low spending limits to mitigate this inconvenience restricts users from making larger purchases.

Innovation Solution

A contactless card equipped with a biometric sensor, processor, and memory that allows users to change transaction limits through a verification routine using verified biometric samples, ensuring secure and flexible transaction authorization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If spending limits on cards are kept low to combat theft and fraud, then security is improved, but user convenience deteriorates when customers want to spend more than the limit allows

Engineering Contradiction:

ImprovesecurityVSAvoiduser convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The spending limit is made dynamic rather than fixed. The system automatically adjusts the spending limit based on real-time biometric verification. When a user provides verified biometric authentication (fingerprint, facial recognition, etc.), the spending limit is temporarily increased to allow larger transactions. This dynamic adjustment resolves the contradiction by maintaining low default limits for security while enabling high limits when authentication confirms the user's identity and intent.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements feedback through biometric verification. Before allowing a transaction exceeding the standard spending limit, the system requests biometric feedback from the user. The biometric sample is compared against stored verified samples, and based on this feedback, the system either approves or denies the transaction. This feedback mechanism ensures that higher spending limits are only applied when the user actively verifies their identity, balancing security with convenience.

Inventive Principle:

Principle #23Feedback

2Reliability

If biometric verification is required for changing transaction limits, then security is improved, but device complexity increases

Engineering Contradiction:

ImprovesecurityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The cardholder performs self-service by providing their own biometric sample (fingerprint, facial recognition, etc.) to verify identity and change transaction limits. The system stores verified biometric samples during card issuance or initial setup. When the cardholder needs to adjust limits, they simply provide their biometric sample again, and the system automatically compares it against stored samples. This self-service approach reduces the need for complex manual verification processes and intermediate authentication steps.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system performs preliminary action by pre-storing verified biometric samples during card issuance or initial configuration. These pre-verified biometric samples are saved in the card's memory or associated database. When the cardholder later needs to change transaction limits, the system only needs to compare the new biometric sample against the pre-stored reference, rather than performing complex verification from scratch. This preliminary action simplifies the ongoing verification process while maintaining high security.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250292054A1Techniques to process transactions with a contactless card based on one or more configurations of the contactless card

Publication Date: 2025.09.18 CAPITAL ONE SERVICES LLC

AI summary

Embodiments may be generally directed to techniques, systems, and devices to control settings stored on contactless cards.