Contactless RFID Payment System

Overview

The Contactless RFID Payment System is designed to simplify transactions using RFID technology. It allows users to make payments effortlessly by scanning an RFID card, deducting the amount, and updating transaction details in real-time.

How It Works

1. RFID Scanning: The system reads the unique ID from the RFID card when scanned.
2. Payment Deduction: A predefined amount is deducted from the card's balance.
3. Balance Display: The remaining balance is displayed on the 16x2 LCD screen.
4. Transaction Logging: Transaction details are logged into a Google Sheet.
5. Web Interface: Manage product costs, view payment statuses, and perform secure withdrawals via a web interface.

Applications

• Retail Stores
• Cafeterias
• Libraries
• Parking Lots

Technologies Used

• Embedded C
• HTML, CSS, JavaScript
• Bootstrap
• Firebase
• Google Sheets API

Components

• ESP32 Microcontroller
• RFID Reader and Tags
• 16x2 LCD Display
• Push Buttons
• Power Supply
• Jumper Wires and Breadboard

Benefits

• Seamless Transactions
• Real-Time Logging
• Security
• Scalable