SafeEntry is a Progressive Web App (PWA) attendance system combining face recognition, role-based authentication, and offline-capable deployment via AWS and Google Colab. The architecture layers a Flask REST API backend with InsightFace and OpenCV face detection, a PWA frontend supporting admin, teacher, and student portals, and JSON-based data storage for profiles and attendance records. Authentication gates all endpoints with session validation, while the face recognition engine preprocesses webcam images, detects faces using primary and fallback models, generates embeddings, and scores similarity against stored profiles. Developers can fork this diagram to customize slot management, add database backends, or integrate with institutional identity systems. The modular design separates concerns across auth, slot management, dashboard, and self-service APIs, making it ideal for educational institutions seeking biometric attendance without vendor lock-in.