Encrypted QR Attendance with Python Automation for CCS Week 2025

Overview

The 2025 edition of the Attendance Monitoring System upgraded to a fully mobile Android app, keeping the same secure QR-based process while enabling on-the-go scanning.

Participants pre-registered via Google Forms, and a Python backend script generated hashed + encrypted QR codes.

The Android app served as the QR scanner and decryptor, logging verified check-ins and syncing results to the cloud in real time.

Highlights

• 📄 Google Forms Registration: Clean and simple front-end for event sign-ups.
• 🧪 Python QR Code Pipeline: Automates secure QR creation using AES + SHA256, embedded with session and role info.
• 📲 Android QR Code Scanner App: Scans and decrypts QR codes instantly to log attendance.
• ☁️ Firebase Realtime Syncing: Uploads attendance records with timestamps, roles, and session details.
• 📈 Live Monitoring Dashboard: View number of attendees and session completion rates in real time.
• 📤 Exportable Reports: Generates downloadable spreadsheets per session.
• 🔐 Privacy-First Approach: All data in QR is encrypted; only the scanner can decrypt it.

Tech Stack

Android · Java · Firebase Realtime DB · Python · QR Code Generator · SHA256 · AES Encryption · Google Forms · Cloud Sync

Design Credits

Angela Marie Avenido

UI/UX Designer, Graphic Artist, Front-End Design

📧 angelamarieavenido113@gmail.com

🔗 https://www.linkedin.com/in/angela-marie-avenido