Smart Attendance for Lecture with Physical Distancing Based on The Internet of Things (IoT)

Currently the world is being reported with the emergence of a new virus, namely the Covid-19 virus, so the Indonesian government implements a Health protocol in the form of Physical Distancing. However, as time goes by, the government recommends that we get used to what is going on, one example is starting to allow on-site teaching and learning activities but on the condition that we continue to implement the existing protocol, namely implementing Physical Distancing. Through the design of this tool, namely smart presence using RFID and ultrasonic sensors based on the Internet Of Things (IoT) by paying attention to the object distance <50 cm which then sends a notification to the Telegram application when the object distance is less than 50 cm and the attendance status is successful. After testing is carried out on all components of the tool, all systems that have been made can work and function properly in accordance with the desired system design. It is hoped that the system created can make it easier for students to apply Physical Distancing health protocols in classroom learning activities and add insight into the importance of maintaining health.