Linked MIFARE Application Installation for Automatic Ticket Retrieval
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Solution Overview
Problem
Existing MIFARE Classic card systems in mobile communication devices require manual swapping of tickets with different prices or categories for the same event, leading to inefficiencies and long queues, as readers are programmed to access specific sectors and cannot detect linked tickets.
Innovation Solution
Implementing a method to install linked MIFARE applications in predefined sectors and using link information to direct the reader to subsequent tickets, allowing automatic retrieval without user intervention by writing link information into the MIFARE memory, enabling seamless access to multiple tickets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual swapping of tickets is implemented in MIFARE Classic card systems, then readers can access specific sectors, but user operation time increases and queue times lengthen
Solution Approach 1:
The patent applies preliminary action by pre-organizing multiple tickets for the same event into linked sectors within the MIFARE Classic card before the reader needs to access them. The system pre-establishes the sector linking structure so that when a reader accesses the first ticket, it can automatically traverse to linked tickets without user intervention, thereby resolving the contradiction between precise reader access and reduced queue time.
2Reliability
If multiple tickets are stored in separate MIFARE Classic sectors, then ticket security is maintained, but automatic detection and retrieval by readers becomes impossible
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of sector linking structures that connect multiple ticket sectors. This intermediary allows readers to automatically traverse from one ticket sector to another while maintaining the security boundaries of each sector. The linking structure acts as a mediator that enables automatic retrieval without compromising the security isolation between tickets.
3Manufacturing precision
If readers are programmed to access specific sectors, then access control is precise, but users must manually swap tickets causing operational inefficiency
Solution Approach 1:
The patent merges multiple ticket sectors into a linked structure where sectors are connected through defined relationships. This merging allows the reader to access multiple tickets through a single initiation point while maintaining precise access control to each individual sector. The combination of sectors into a linked chain resolves the contradiction by preserving access precision while eliminating manual swapping operations.
Data Source
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AI summary
A method for installing linked MIFARE applications (TK1-A, TK1-B, TK1-C) in a MIFARE memory (MM) being configured as a MIFARE Classic card or an emulated MIFARE Classic memory comprises storing the first linked MIFARE application (TK1-A) in a first free sector of the MIFARE memory, storing the second linked MIFARE application (TK1-B) in a second free sector of the MIFARE memory and writing link information (LK) indicating this second sector in a link information memory location of the first sector where first linked MIFARE application (TK1-A) has been stored, and repeating the steps of storing linked MIFARE applications and writing link information (LK) until the last linked MIFARE application (TK1-C) has been stored.