Secure Token Transaction Unit With Dynamic Offline Limits
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Solution Overview
Problem
Conventional electronic token transaction systems have fixed and unchangeable token limits, which are inadequate for the increased frequency and quantity of transactions, necessitating a solution for updating token limits easily and quickly.
Innovation Solution
A secure token transaction unit with a token storage unit, a limit storage unit for dynamic token limits, and an offline token transaction unit that checks if transactions meet these dynamic limits, allowing for remote updates and flexible limit management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed token limits are used in conventional electronic token transaction systems, then system security is maintained through static control, but the system cannot adapt to increased frequency and quantity of transactions
Solution Approach 1:
The patent transforms static token limits into dynamic limits that can be remotely updated. The limit storage unit stores updateable limit values, and the offline token transaction unit checks transactions against these dynamic limits. This allows the system to adapt to varying transaction volumes and frequencies without structural changes, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent enables changes to the token limit parameter through remote updates via the dynamic token limit update receiving unit. Instead of fixing the limit parameter permanently, the system allows dynamic modification of this parameter based on transaction needs, achieving adaptability while maintaining simple limit checking logic.
2Adaptability or versatility
If token limits are made dynamic and updateable, then the system can adapt to varying transaction volumes, but security requirements for limit updates must be strengthened
Solution Approach 1:
The patent introduces service provider units as intermediaries between the update source and the secure token transaction units. These service provider units verify update requests and securely transmit limit updates, ensuring that flexibility in limit management does not compromise security. The intermediary layer protects against unauthorized modifications while enabling legitimate dynamic updates.
3Speed
If offline token transactions are enabled with dynamic limits, then transaction speed is improved, but the complexity of limit checking and validation increases
Solution Approach 1:
The patent performs limit validation in advance by storing dynamic token limits in the limit storage unit before offline transactions occur. The offline token transaction unit checks transactions against pre-stored limits, enabling fast offline processing without real-time validation complexity. This preliminary preparation maintains speed while managing validation complexity efficiently.
Data Source
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AI summary
A secure token transaction unit (TU) comprising a token storage unit (101) configured for storing at least one token of the electronic token transaction system (TS); a limit storage unit (102) configured for storing at least one dynamic token limit, in particular a dynamic monetary value limit of the token; and an offline token transaction unit (103) configured for checking if an offline token transaction meets the dynamic token limit.