IoT Door Lock using RFID with Online Attendance

Abstract

This paper presents the design and detailed explanation of an Internet of Things (IoT) based RFID Attendance System. In the past, attendance in organizations such as schools, colleges, and private offices was documented and logged in registers. An individual was needed to document and manage the attendance records. Nevertheless, it was customary during that time period to request written evidence, which added a touch of elegance to the fashion. However, there were numerous drawbacks associated with that particular procedure. Therefore, the process of converting attendance records into a digital format emerged. Once the issue of paper wastage is resolved. The entirety of the data was stored in a digital format within various computers. However, there were still some issues present in this scheme. If the computer responsible for storing attendance data malfunctions, there is a significant risk of data loss. Therefore, the concept of Internet of Things (IoT) emerged. Currently, attendance is directly documented online. Consequently, this diminishes the probability of data loss in any circumstance. The attendance system is designed using the ESP32 module, which is a microprocessor. The programming language used for the ESP32 module is Embedded C, and the integrated development environment (IDE) utilized is called Arduino IDE. We have utilized prominent libraries such as the RFID 522 library, AdafruitMQTT library, and the Wi-Fi library.