IC Card Data Storage with Segmented Memory and Universal Access
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Solution Overview
Problem
Current smart card systems lack flexibility and interoperability in storing and accessing user data across different environments and terminals, with limited user-modifiable data fields and proprietary access mechanisms.
Innovation Solution
A system and method for an integrated circuit card that includes a memory unit with formatted and unformatted data records, where formatted records use generic labels for accessibility across environments and unformatted records use non-standardized labels, with security levels for data protection, allowing access via various terminals like POS, PDA, and personal computers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If proprietary access mechanisms are used for data storage, then data security is improved, but interoperability across different terminals deteriorates
Solution Approach 1:
The data storage system is segmented into multiple layers: a standardized interface layer for interoperability, and proprietary secure layers for security. This allows different terminals to access data through a common interface while maintaining security through layered protection mechanisms.
Solution Approach 2:
A standardized data access interface acts as an intermediary between terminals and the proprietary data storage system. This intermediary layer enables interoperability by translating between different terminal protocols and the card's internal data structure, while the underlying security mechanisms remain intact.
2Ease of manufacture
If fixed data fields are used in memory, then manufacturing simplicity is improved, but user flexibility deteriorates
Solution Approach 1:
The data field structure transitions from fixed to dynamic. The card memory is organized with standardized field definitions that can be dynamically configured and modified by users through terminal interfaces, allowing the system to adapt to different user needs while maintaining a consistent manufacturing process.
Solution Approach 2:
The memory structure is designed with universal standardized fields that can serve multiple purposes. These fields can be configured to store different types of information depending on user needs, making the same physical structure versatile for various applications without requiring different manufacturing processes.
3Reliability
If environment-specific access protocols are used, then data security is improved, but ease of operation across multiple environments deteriorates
Solution Approach 1:
A universal access protocol is implemented that works across all terminal environments. This protocol provides a consistent interface for data access while incorporating environment-specific security measures, allowing users to operate the card uniformly across different terminals without compromising security.
Solution Approach 2:
The system changes parameters dynamically based on the environment. While the access protocol remains consistent for ease of operation, security parameters such as encryption keys and authentication requirements are adjusted according to the specific terminal environment, maintaining security without complicating user interaction.
Data Source
AI summary
A system and method for obtaining and storing information in an integrated circuit card is provided for use in a transaction over different environments. The card includes a memory unit having data records including formatted and unformatted fields, preferably comprising a name field, a data field and a security level field. The formatted fields are accessible, using generic labels and the unformatted fields are accessible using a non-generic label.