Playing Card Identity Strings for Sequence Fraud Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Card playing games in casinos are vulnerable to fraud and cheating due to potential information leaks during production, transport, and gameplay, with sources including dealer-player collusion, card defects, and the use of false cards.
Innovation Solution
A set of playing cards with detectable card identity strings and encrypted codes that ensure the sequence and authenticity of cards, using UV-visible or encrypted card identity strings and codes to verify the integrity of the card sequence during gameplay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If card identity information is made detectable and verifiable, then the reliability of detecting fraud is improved, but the device complexity increases due to encryption systems and control mechanisms
Solution Approach 1:
The card identity information is segmented into multiple components: a card-specific identity string, a set-specific identity string, and an encrypted verification code. This segmentation allows the system to verify card authenticity through multiple independent checks without requiring a single complex verification system.
Solution Approach 2:
An encrypted verification code acts as an intermediary between the card identity information and the verification process. This intermediary element allows the system to maintain security while enabling detection, as the encrypted code can be verified without revealing the full card identity information.
2Loss of information
If the transport and production chain is shortened to reduce information leakage, then the loss of information is reduced, but the productivity of card production and distribution is worsened
Solution Approach 1:
The card sequence information is encrypted and packaged with the card set before distribution. This preliminary encryption action ensures that even if cards are transported or stored improperly, the information cannot be accessed or leaked, maintaining security without requiring extremely tight control throughout the entire supply chain.
Solution Approach 2:
The system changes the state of card identity information from plain text to encrypted format. This parameter change allows the information to be securely transmitted and stored during production and transport, reducing leakage risk while maintaining normal productivity levels through automated verification processes.
3Reliability
If high quality control is applied to remove card defects, then the reliability of card identity is improved, but the manufacturing precision requirements and production time increase
Solution Approach 1:
Instead of relying solely on physical card quality control, the system creates a digital copy of card identity information (the identity string and verification code) that can be verified independently of physical defects. This allows the system to maintain high reliability through digital verification while reducing the stringency of physical manufacturing precision requirements.
Solution Approach 2:
The system replaces physical quality control mechanisms with digital verification. Rather than relying solely on precise manufacturing to prevent defects, the system uses encrypted digital codes and automated verification to ensure card identity accuracy, thereby reducing the burden on mechanical manufacturing precision.
Data Source
AI summary
A set of playing cards comprises N playing cards, N>1, each playing card having a detectable card identity string. This card identity string is a series of M characters. The set of playing cards is provided with a set identity string, this set identity string being composed of N groups of R characters, R<=M. Each card identity string provides to the set identity string one group of R characters taken from the series of M characters of this card identity string. The sequence of said N groups of R characters in the set identity string is identical to the sequence of the N cards in the set of playing cards.