Secure wireless volume digital transaction using blockchain technology

Liew, Ren Yi (2025) Secure wireless volume digital transaction using blockchain technology. Final Year Project, UTAR.

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Abstract

This project details the conceptualization, design, and execution of a secure wireless transaction platform that leverages blockchain technology, specifically to enhance the efficiency and security of peer-to-peer digital payments. The research investigates the integration of blockchain protocols—namely, Ethereum-compatible smart contracts deployed on the Polygon Amoy testnet—with wireless communications to construct a decentralized system capable of reliable batch token transactions. This platform ensures both security and transparency, functions independently of centralized authorities, and demonstrates operational robustness. The architecture utilizes a custom ERC20 token, referred to as RYN, integrated with advanced batch processing features. The immutability of blockchain records is preserved, as every transaction is indelibly logged on-chain. A mobile application, developed using React Native and the Expo framework, implements a sophisticated QR code processing system. This allows for real-time wireless communication between users: wallet addresses and payment data are encrypted within QR codes, simplifying the transaction process and promoting scalability for practical use cases. Key technological features incorporated in this system include biometric authentication to reinforce security measures, encrypted wireless data transmission, integration of real-time cryptocurrency price tracking, and comprehensive transaction history management. The system also tackles several prominent challenges in decentralized finance: secure token distribution, optimization of transaction fees (gas), token interoperability, and overall system integrity. Throughout development, the project team adhered to rigorous testing protocols. Unit and integration tests, as well as thorough security audits, were conducted across multiple environments—including both local Hardhat networks and the Polygon testnet. These measures verified the effective integration of blockchain systems with wireless mobile technology and demonstrated the practical feasibility of secure, decentralized transaction platforms for real-world use that demand wireless data transfer and verifiable digital asset exchange. Ultimately, this research contributes to the ongoing evolution of blockchain applications by providing a practical framework that combines state-of-the-art decentralized technology Bachelor of Information Technology (Honours) Communications and Networking Faculty of Information and Communication Technology (Kampar Campus), UTAR v with mobile implementation. It offers insight into the potential future architectures for secure digital transactions in increasingly wireless environments.

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