Smart Card User Alerts Through Filtered On-Card Message Decisions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing smart cards lack an effective mechanism to manage communication with cardholders when a message unrelated to a transaction needs to be conveyed, particularly due to limited computing and memory resources.
Innovation Solution
A smart card with a user output interface that dynamically assesses parameters like fingerprint sensor dirt or internal conditions, generating decisions to notify users of messages through LEDs, sound, or displays, and uses terminals for detailed message retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the card continuously monitors and notifies users of all parameter changes, then user awareness of issues is improved, but the limited user output interface becomes overwhelmed and device complexity increases
Solution Approach 1:
The notification system is segmented into two levels: a card-level decision layer that filters and prioritizes messages, and a terminal-level presentation layer that handles the actual user interface. This segmentation allows the card to manage complexity by making decisions about which messages to notify users of, while the terminal handles the complexity of presenting messages through various output interfaces.
Solution Approach 2:
The terminal acts as an intermediary between the card and the user. It receives messages from the card, processes them through its own logic, and presents them to the user through its interface. This intermediary role allows the card to maintain simple communication while the terminal handles the complexity of user interaction and message presentation.
2Device complexity
If the card uses limited user output interfaces to notify users, then device complexity is reduced, but the ability to convey detailed messages is limited
Solution Approach 1:
The system transitions from direct card-to-user communication to card-to-terminal-to-user communication. This dimensional change allows detailed messages to be conveyed through the terminal's more capable interface while keeping the card's interface simple. The terminal can display comprehensive message details, images, and interactive elements that would be too complex for the card's limited interfaces.
3Reliability
If the card generates notifications for all parameter changes, then user awareness is improved, but energy consumption increases
Solution Approach 1:
The card applies partial action by selectively generating notifications only for parameter changes that meet predefined criteria and are deemed important enough to warrant user awareness. Not all parameter changes trigger notifications - only those that cross thresholds or represent significant state changes. This selective approach reduces energy consumption while maintaining reliable user notification for critical issues.
Data Source
AI summary
Provided is a method for managing a card comprising a user output interface. The method comprises a control operation of the card for getting, by the card, a parameter which can evolve dynamically during card lifespan, generating, by the card, a decision which may be positive or negative by executing a preset function applied to said parameter, and, only if said decision is positive, identifying, by the card, a message and notifying a user of the card directly through the user output interface that the card has the message to deliver to the user. Other embodiments disclosed.