The QR Code Attendance System using HTML is a web-based project that allows users (typically students or employees) to mark attendance by scanning a QR code. This system aims to automate and streamline the traditional attendance-taking process, making it faster, contactless, and more secure.

Project Objective

To develop a digital attendance system where users scan a QR code generated by the system to record their attendance, reducing manual errors and saving time.

Key Features

1. QR Code Generation

A unique QR code is generated for each session or user.

The QR code contains encoded information like user ID, date, and time.

2. Attendance Scanning Interface

A simple HTML page integrates a webcam or camera to scan QR codes.

Once scanned, the system extracts the encoded data and records attendance.

3. Real-Time Attendance Marking

Attendance is logged instantly after a successful scan.

Can be connected to a database (via JavaScript and backend support) to save records.

4. User Roles

Admin or Teacher: Can generate and display QR codes.

Students or Employees: Scan the QR code to register their presence.

Technologies Used

HTML: For creating the user interface.

JavaScript: For integrating the QR code scanner (e.g., using html5-qrcode or Instascan.js).

CSS: For styling the web interface.

QR Code Libraries: For generating and reading QR codes (e.g., QRCode.js, jsQR).

(Optional) Backend using PHP, Node.js, or Firebase to store attendance data.

Example Workflow

Teacher logs into the system and generates a QR code for the class session.

Students open the scanning page and scan the displayed QR code.

The system records the student's ID and timestamp as "present" in the database.

Admin can view, export, or analyze attendance reports later.

Benefits

Fast and efficient attendance marking.

Eliminates chances of proxy or manual errors.

Works on any device with a camera and web access.

Environmentally friendly (no paper sheets needed).

Limitations

Requires a camera-enabled device.

Needs internet or local network for real-time data saving.

May require backend integration for storing data persistently.

Conclusion

The QR Code Attendance System using HTML is a modern, user-friendly solution to manage attendance efficiently. It introduces web development concepts and basic barcode technology, making it a great beginner-to-intermediate level project. It can be enhanced further with backend integration, user authentication, and report generation.