Development of intelligent based on IoT for security lock using QR code specialize for homestay

Zulkifli Teoh, Muhd Ariff (2025) Development of intelligent based on IoT for security lock using QR code specialize for homestay. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project presents the development of an IoT-based smart lock systemthat uses QR codes as digital keys, specifically designed for homestays. The system integrates IoT components, including the ESP32 microcontroller, QR code scanner, and Firebase database, to provide secure and contactless access control. A smartphone application allows property owners to generate unique QR codes for guests, enabling seamless check-ins without the need for physical interaction. The system's design emphasizes real-time synchronization with Firebase, ensuring efficient data validation and granting access only to authorized users. Unlike traditional lock-and-key mechanisms or RFID cards, QR code authentication eliminates risks such as key duplication, loss, or unauthorized sharing of credentials. The solution also incorporates features like real-time door status updates, user-friendly application interfaces, and customizable access duration. This project demonstrates a practical application of IoT to enhance the security and operational efficiency of homestays, addressing the demand for cost-effective and scalable solutions in the hospitality industry. The proposed system not only provides a robust security framework but also enhances the user experience for property owners and guests, paving the way for broader adoption of smart technologies in property management.

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