Student attendance system is used to measure student participation in a classroom. Before pandemic attendance was taken manually like in sheets or registers. But when the pandemic hit, everything was online, so even the classes. The attendance count is a very important problem that the administrator needs to be more careful about taking during the online classes as there are many chances of a proxy happening. So, we came up with this proposed system “Student attendance using QR code” This paper proposes an attendance system that is based on the QR code-based attendance system. The students need to scan the QR in the class according to the professor instruction. By implementing this proposed system, we can reduce proxy and time in taking attendance of students. In order to design this proposed system, we are using technologies like OpenCV through python, and some libraries like MYQR, PYbase64, Pyzbar.