Card Frame Assembly for Mini-Card Reader Compatibility
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Solution Overview
Problem
Transaction cards with smaller form factors, such as mini-cards, are not compatible with all card readers and are susceptible to skimming due to their wireless operation.
Innovation Solution
A card frame assembly that secures a smaller transaction card, incorporating a receptacle and antenna, enabling it to function as a traditional transaction card, with features like electrical contacts, shielding, and a processing circuit for authentication and cryptographic functions, and optionally using a mobile device for additional security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a smaller form factor transaction card is used, then portability and convenience are improved, but compatibility with card readers deteriorates
Solution Approach 1:
The mini transaction card is nested within a card frame that has traditional credit card dimensions. The card frame contains a receptacle that holds the mini card, allowing the combination to present a standard-sized interface to card readers while maintaining the portability benefits of the smaller mini card.
Solution Approach 2:
The card frame acts as an intermediary between the mini transaction card and the card reader. It provides the mechanical interface and electrical contacts that the mini card lacks, enabling compatibility with traditional card readers while the mini card provides the transaction functionality.
2Adaptability or versatility
If wireless communication is enabled in transaction cards, then contactless transaction capability is improved, but susceptibility to skimming increases
Solution Approach 1:
The card frame includes shielding elements positioned to block electromagnetic signals from reaching the mini card's antenna during certain operations. This preliminary protective action prevents skimming attempts by blocking the communication path between potential scanners and the card.
Solution Approach 2:
The shielding is applied selectively in specific regions of the card frame where electromagnetic interference and skimming risks are most prominent. This localized approach provides protection against skimming while maintaining wireless communication functionality where needed.
3Reliability
If authentication and cryptographic functions are added to the card frame, then security is improved, but device complexity increases
Solution Approach 1:
The processing circuit that provides authentication and cryptographic functions is integrated into the card frame rather than being separate components. This merging of functions into a single integrated unit provides enhanced security while managing complexity through consolidation rather than proliferation of separate parts.
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 compatibility with various card readers and enhances security by providing unique identifiers and authentication, reducing skimming risks.
Implementation Method 1
The card frame includes an antenna that wirelessly communicates with a card reader
Implementation Method 2
The receptacle in the card frame may have electrical contacts that mate with electrical contacts on the transaction card to couple it to the card frame antenna
Implementation Method 3
The card frame may include shielding to prevent the antenna in the transaction card and the antenna in the card frame from both communicating with a card reader simultaneously
Data Source
AI summary
A modular transaction card assembly includes a card frame having the traditional dimensions of a credit card, and a transaction card that is smaller than a traditional card and that fits into a receptacle of the card frame. Each of the card frame and the transaction card may be capable of performing contactless data transactions individually. In some instances, the combined assembly of the card frame with the transaction card may detect a proximity of a mobile device to the assembly and generate an authentication credential that is unique to the combination of the card frame, the transaction card, and the mobile device. The authentication credential may be used to authentic the transaction card when conducting a data transaction.