Smart Contract Communication Path Tracking for SIMbox Fraud Prevention

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Solution Overview

Problem

The mobile network industry faces significant financial losses due to SIMbox fraud, where fraudsters divert international calls to appear as local, evading international calling rates and local taxes, and compromising quality of service and security.

Innovation Solution

A method and system using smart contracts on a distributed ledger to track communication paths, ensuring that each operator in the communication path enters into a smart contract with the next operator and registers it with a governing contract, creating a tamper-proof chain to prevent fraud and ensure fair payment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional communication routing is used without tracking mechanisms, then communication speed and simplicity are maintained, but fraud prevention capability deteriorates

Engineering Contradiction:
Improvefraud prevention capabilityVSAvoidcommunication path tracking complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A governing smart contract acts as an intermediary on the blockchain to coordinate and verify communication paths between operators. This intermediary mechanism enables fraud prevention through transparent tracking without requiring complex bilateral agreements between each operator pair, resolving the contradiction between reliability improvement and complexity avoidance.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If smart contracts are implemented on a distributed ledger to track communication paths, then transparency and fraud prevention are improved, but system complexity and implementation overhead increase

Engineering Contradiction:
Improvecommunication path transparencyVSAvoidsmart contract implementation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The fraud prevention system is segmented into modular components: governing smart contracts that establish communication paths, operator smart contracts that verify and report communications, and blockchain ledger that stores the immutable record. This segmentation allows each component to perform its function independently, reducing overall system complexity while maintaining transparency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Operators automatically execute smart contract code to verify communication paths and report communications to the blockchain without requiring manual intervention or complex centralized coordination. The self-service nature of automated smart contract execution reduces implementation overhead while ensuring consistent transparency across the network.

Inventive Principle:
Principle #25Self-service

3Productivity

If manual verification of communication paths is used, then system simplicity is maintained, but productivity and fraud detection speed deteriorate

Engineering Contradiction:
Improvefraud detection speedVSAvoidcommunication path verification automation
Core Design Contradiction:
ProductivityVSExtent of automation

Solution Approach 1:

Manual verification processes are replaced with automated smart contract execution on the blockchain. The smart contracts automatically verify communication paths, validate operator reports, and update the immutable ledger without human intervention. This substitution of mechanical manual processes with automated cryptographic verification dramatically increases fraud detection speed while maintaining system reliability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12238073B2Method for fraud prevention and tracking a communication path with smart contracts
Publication Date: 2025.02.25 RNKD SECURITY & SYST LTD
  • US12238073B2 patent drawing
  • US12238073B2 patent drawing
  • US12238073B2 patent drawing

AI summary

A method for tracking communication, comprising: receiving a notification pertaining to a communication protocol and associated with a communication between an initiating device and a receiving device; implementing a security protocol embedded within the communication protocol by: establishing, on a distributed ledger, a smart contract for tracking communication along a channel to a subsequent operator of a sequence of operators forming a communication path between the initiating and receiving device, the channel being at least a segment of the communication path, and registering the smart contract with a governing contract associated with an originating operator in communication with the initiating device over a local channel and configured to govern communication along the communication path; and transferring the notification to the subsequent operator along the at least segment of the communication path.