NFC-Cash-Card-System

NFC Cash Card System is a Java Swing-based desktop application designed to enable cashless transactions using NFC cards. It is tailored for public canteens in controlled environments. The system supports NFC card reading, transaction processing, and real-time data communication through serial ports.

---

Features

• Serial Port Communication

  • Reads NFC card data via serial port (using RXTX or jSerialComm)
  • Outputs card and transaction info to connected display devices

• Transaction Management

  • Reload and withdrawal functionality
  • Seller and customer registration
  • Tracks all transactions for auditing

• User Authentication

  • Secure login for administrators and sellers
  • Role-based access control

• MySQL Database Integration

  • Stores customer, seller, and transaction data
  • Real-time data fetch and update

• Intuitive User Interface

  • Java Swing GUI
  • Views for transaction history, card balances, and user management

---

Suitable Environments

This system is ideal for:

• University and college campus canteens
• School cafeterias
• Office and corporate food courts
• Hospital canteens
• Factory or industrial staff kitchens
• Temporary event or camp-based food services

Best suited for public canteens in campuses, schools, offices, hospitals, factories, and other controlled environments where cashless transactions are preferred.

---

Technologies Used

• Java (Swing) – for desktop GUI
• MySQL – for database and record management
• RXTX / jSerialComm – for serial port communication
• NFC Reader Hardware – integrated via COM port

---

---

🔌 Special Note for Future Developments

Create New Account

Communication flow between PC and Arduino:

• MAIN_NEWREG-OPENED
  → Sent from PC when "Create New Account" UI is opened

• MAIN_NEWREG-CARDOK
  → Sent from PC after receiving Card No from Arduino

• MAIN_NEWREG-PINOK
  → Sent from PC after receiving PIN from Arduino

---

SMS on Reload

After a successful reload, PC sends this to Arduino: SMS__

Example: SMS_+941234567_Rs.100.00

---

TIP: Key Serial Commands

Direction	Command Prefix	Description
Arduino → PC	MAIN_CARD_	Send NFC card number
Arduino → PC	MAIN_PSW_	Send PIN number

---

---

👤 Author

Designed & Developed by Akila Ranasinghe
📧 Contact: wmakilaranasinghe@gmail.com

©️ License & Copyright

Copyright © 2018-2025 Akila Ranasinghe [Spyder Innovations]
This project is open-source under the Apache-2.0 license.
Feel free to use, modify, and distribute with attribution.