IoT Systems Project

NFC-Based Access System

A system designed to monitor and control attendance using NFC-based identification, implemented with embedded systems and a web application for efficient data logging and remote access.

System overview

NFC-enabled ESP32 device with web application for real-time attendance tracking

Connectivity status

Device connected to WiFi enabling real-time data synchronization with the web dashboard

Overview

This project implements an IoT-based attendance system using ESP32 and NFC technology, integrated with a web application for real-time monitoring and data management. It supports contactless identification and centralized record keeping, with local backup functionality for network failure scenarios and battery backup to ensure continuous system operation during power interruptions.

Core Objectives

✔ Contactless Attendance: Enable fast and secure attendance marking using NFC-based identification.
✔ Real-Time Monitoring: Provide live attendance tracking through an integrated web application.
✔ Data Reliability: Ensure data integrity using local backup during network failures.
✔ Power Continuity: Maintain uninterrupted system operation using battery backup during power outages.

Key Features

Contactless attendance using NFC-based identification
Real-time attendance tracking via web dashboard
Secure and automated data logging system
Local backup support during network failure
Battery backup for uninterrupted operation
Centralized attendance records with easy access

Technologies Used

ESP32 Embedded Platform
NFC-Based Authentication System
Full-Stack Web Application Development
Database Management System (Firebase)
RESTful HTTP Communication

Technologies Used

ESP32 Embedded Platform
NFC-Based Authentication System
Full-Stack Web Application Development
Database Management System (Firebase)
RESTful HTTP Communication

Working Principle

The system is based on NFC authentication using an ESP32 microcontroller, integrated with a web application for real-time attendance tracking and data management.

1

User taps NFC card/tag on reader

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2

ESP32 reads NFC UID data

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3

Data is sent to web server via HTTP

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4

Server validates and stores attendance

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5

Web dashboard updates attendance in real time

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6

Local backup stores data during network failure

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7

Battery backup ensures uninterrupted operation

Project Gallery

WiFi Connectivity Status

Device Home Screen

Web Application

Applications

Educational institutions for automated attendance tracking
Corporate offices for employee attendance management
Workshops and training centers
Secure access and entry logging systems

Future Improvements

Mobile app integration for attendance tracking
Cloud-based database synchronization for multi-device access
Machine learning-based attendance pattern analysis
Automated anomaly detection (proxy or irregular attendance)
Advanced analytics dashboard for insights and reporting