Miniaturized Card Reader with Mobile Decoding
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Solution Overview
Problem
Current magnetic stripe card readers are not portable enough to enable financial transactions between individuals using mobile devices, limiting the ability to pay debts or make payments outside of merchant transactions.
Innovation Solution
A miniaturized financial transaction card reader device with a housing, read head, and passive ID circuitry that connects to a mobile device via an output jack, allowing for data decoding and transmission, enabling transactions between individuals using a magnetic stripe card.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a miniaturized card reader is used, then portability and ease of operation are improved, but device complexity increases due to integration requirements
Solution Approach 1:
The card reader integrates multiple functions into a single compact device: the read head for magnetic stripe detection, passive ID circuitry for card identification, and an output jack for mobile device connection are merged into one unit. This consolidation enables portability while managing complexity through functional integration rather than separate components.
Solution Approach 2:
The miniaturized card reader serves multiple purposes: it can read magnetic stripe cards, identify cards through passive ID circuitry, and interface with mobile devices for financial transactions. This multi-functionality in a single device improves portability and ease of operation for individual users.
2Reliability
If traditional platform card readers are used, then reading reliability is maintained, but device size and portability worsen
Solution Approach 1:
The traditional platform card reader is segmented into essential functional components: a miniaturized read head for magnetic stripe detection, passive ID circuitry for card identification, and a connection interface for mobile devices. This segmentation allows each component to be optimized for minimal size while maintaining overall reliability.
Solution Approach 2:
The critical reading function is extracted from the bulky platform reader structure. The read head is isolated as a separate, miniaturized component that can be integrated with mobile devices, eliminating the need for the entire traditional platform reader structure while preserving card reading capability.
3Adaptability or versatility
If passive ID circuitry is added, then device functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The passive ID circuitry acts as an intermediary between the mobile device and the card reader's reading function. It facilitates communication and data transfer without requiring active processing power, simplifying the manufacturing process while enhancing device functionality and adaptability.
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
Enables secure and reliable financial transactions between individuals using a mobile device, reducing the need for expensive card readers and software, with confirmation of payment and fraud prevention.
Implementation Method 1
The magnetic stripe card is capable of storing data by modifying the magnetism of magnetic particles embedded in the stripe. The data stored on the magnetic stripe may be sensed or read by swiping the stripe past a read head.
Implementation Method 2
The passive ID circuitry further comprises: a unique ID storage comprising memory for containing the unique ID; a power subsystem, for providing power to enable communication with the mobile device; a pathway subsystem for routing signals to the output jack; a communication subsystem for reading and transmitting the unique ID from the unique ID storage
Data Source
Figure 1
Figure 2~3A
Figure 3B~4A
AI summary
A financial transaction card reader device includes a housing having a slot for swiping a magnetic stripe of a financial transaction card to complete a financial transaction between a buyer and seller. A read head is in the housing, reads data stored on the magnetic stripe and for produces a signal indicative of data stored on the magnetic stripe. An output jack is adapted to be inserted into a microphone input associated with a seller's mobile device for providing the signal indicative of data stored on the magnetic stripe to the mobile device. The signal is decoded in the mobile device.