Fingerprint Recognition Card Power Management and Security
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Solution Overview
Problem
Payment schemes using plastic cards lack secure elements, making them vulnerable to fraud if lost, and are inconvenient for multiple uses, as they do not require separate secure elements for authentication.
Innovation Solution
A fingerprint recognition card with an embedded secure device, powered by its own battery, which selectively supplies power to minimize consumption and includes a fingerprint sensor for authentication, a secure region for encryption and communication, and a display for visual feedback, allowing secure payment processing and multiple uses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic card is used for payment without secure elements, then the card is simple to use and widely accepted, but the card is vulnerable to fraud if lost
Solution Approach 1:
The patent embeds a secure element chip inside the plastic card, creating a nested structure where the chip is contained within the card body. This allows the card to maintain its simple external form while incorporating advanced security features internally, resolving the contradiction between security and simplicity.
Solution Approach 2:
The patent combines the plastic card and secure element chip into a single integrated payment device. The controller unit merges the functions of both components, enabling the card to operate as a unified secure payment system rather than separate elements, thus improving security without significantly increasing complexity.
2Adaptability or versatility
If a plastic card is used for multiple purposes, then the card becomes versatile, but the resistance to separately carrying the card increases
Solution Approach 1:
The patent implements a secure element chip that can store multiple application identifiers and handle different payment protocols, enabling the card to perform multiple functions including contactless payment, magnetic stripe emulation, and proximity communication. This multi-functionality allows one card to replace multiple separate cards, improving carrying convenience while maintaining versatility.
3Ease of operation
If the fingerprint recognition card uses its own battery, then the card achieves independent operation, but the power consumption increases
Solution Approach 1:
The patent implements a power management unit that controls the battery to operate in periodic cycles rather than continuously. The battery powers the card during active transactions and enters low-power states during idle periods, significantly reducing overall power consumption while maintaining independent operation capability when needed.
Solution Approach 2:
The patent extracts power from external sources during card reader interactions, using the card reader's power supply to charge the card's battery through contactless or contact-based charging mechanisms. This reduces reliance on the card's own battery, lowering power consumption while preserving independent operation capability.
Data Source
AI summary
A fingerprint recognition card includes a first region configured to receive power from a battery of the fingerprint recognition card, supply the power supplied from the battery to a second region in response to an input of a power button of the fingerprint recognition card, and control activation of a third region based on a fingerprint authentication result provided from the second region, the second region configured to be activated in response to the power supplied from the first region and include a fingerprint sensor configured to sense a fingerprint input by a user of the fingerprint recognition card and the third region configured to be activated based on the control of the first region.