RFID Game Token Tracking for Fraudulent Usage Detection
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Solution Overview
Problem
Existing RFID-attached game token coins in casinos fail to store information on usage history, making it difficult to detect fraudulent coins with unusual histories, which can be used for crimes like money-laundering.
Innovation Solution
Implementing an RFID tag with a data non-rewritable region for constant information and a data rewritable region for variable information, allowing the storage and tracking of location-related information, enabling detection of abnormal usage patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a memory region is locked after writing necessary information to prevent unauthorized rewrite, then the reliability of the game token coin is improved, but the ability to store additional usage history information is lost
Solution Approach 1:
The RFID tag's memory is segmented into a locked memory region for storing immutable authentication data (serial number, manufacturing information) and an unlocked memory region for storing variable usage history information. This segmentation allows simultaneous maintenance of reliability through locked data and information completeness through writable data.
2Ease of operation
If the RFID tag stores only constant information in a locked memory region, then the ease of operation is improved, but the functionality to track location and usage history is reduced
Solution Approach 1:
The memory structure is divided into locked and unlocked regions, enabling the system to maintain simple authentication operations while simultaneously gaining advanced usage tracking capabilities through the unlocked region.
Solution Approach 2:
The system transitions from a static locked memory structure to a dynamic structure where part of the memory remains locked for authentication while another part is unlocked for continuous updating of usage history, allowing the tag to adapt to different operational states.
3Reliability
If the memory region is completely locked to prevent fraud, then the reliability is improved, but the ability to detect unusual usage patterns is lost
Solution Approach 1:
By segmenting memory into locked and unlocked regions, the system maintains strong fraud prevention through locked authentication data while enabling unusual usage detection through writable usage history data that records location and temporal information.
Solution Approach 2:
The unlocked memory region provides feedback about usage patterns by storing location and temporal information, enabling the system to detect unusual usage behaviors while the locked region continues to provide reliable authentication.
Data Source
AI summary
In a management system of a game token coin, one RFID tag having a data non-rewritable region and a data rewritable region is imparted to the game token coin. The location relating information of the game token coin is stored in the data rewritable region. The system includes a writer configured to additionally write the location relating information, a reader configured to read the location relating information from a plurality of the game token coins, and a management controller configure to examine the information obtained from the reader. The management controller includes a function that determines whether a history of the location relating information obtained from the reader has no abnormality.