🛡️ TrustLink — RFID-Powered Fraud Detection for Retail (Walmart Sparkathon 2025)

TrustLink is a full-stack simulation platform that detects, logs, and prevents RFID tag fraud using a secure blockchain-backed logging system. It empowers retailers (like Walmart) to verify product authenticity across the supply chain and avoid inventory fraud.

Built with React + TypeScript (frontend) and Express.js (backend), TrustLink showcases how RFID + Cybersecurity can revolutionize retail security.

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📦 Project Structure

TrustLink/
├── client/        # NextJs + TypeScript frontend
├── server/        # Express backend with blockchain simulation
├── README.md      # You are here!

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🚀 Tech Stack

Area	Tech Used
Frontend	React, TypeScript, Tailwind, Vite
Backend	Node.js, Express.js, CORS
Blockchain	JSON-based simulated ledger
Data Flow	REST API between client & server

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🔐 Problem We Solve

Retail giants like Walmart face:

• Unauthorized product replacements
• Counterfeit RFID tags in transit
• Lack of real-time fraud detection

🔍 TrustLink provides live RFID tag scanning, blockchain-based verification, and fraudulent scan alerts — all in one tool.

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🧪 Try It Locally (Simulated Scan)

1. Clone the Repository

git clone https:(https://github.com/Akdest/trustlinkk)
cd TrustLink

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2. Start the Server

cd server
npm install
node index.js

Server runs on: http://localhost:5000

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3. Start the Frontend

cd ../client
npm install
npm run dev

Visit: http://localhost:5173

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4. Simulate Scanning

In the UI:

• ✅ Enter: legit-123 → Genuine Entry
• ❌ Enter: fraud-xyz → Fraudulent Entry

You'll see:

• Blockchain Log of Scans
• Fraud Summary Card

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📊 Features

✅ Simulate RFID tag verification ✅ Detect and log fraudulent activity ✅ Real-time UI updates ✅ Tamper-proof blockchain ledger ✅ Clean UI with React + Tailwind

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🏁 Next Steps

🔧 Coming Soon:

• Admin dashboard with role-based logins
• Email/SMS alerts for fraud
• GPS-based supply chain mapping
• QR/RFID cross-verification

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🧠 Inspired by

Walmart's use of RFID in inventory tracking (case study) — we identified gaps in fraud detection and added real-time security validation layers to improve retail trust.

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🙌 Team WSEC-CREW

Built for Walmart Sparkathon 2025 https://github.com/Akdest/trustlinkk

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📄 License

MIT License

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