Rancang Bangun Smart Lock System Menggunakan Qr-Code Pada Loker Perpustakaan …

ABSTRACT A security system is needed to prevent theft or other criminal acts. One of the implementations of a popular security system today is the Smart Lock System. This study discusses the design of a smart lock system using QR Code scanning as a locker key at the Library of the Faculty of Engineering, University of Riau. The design of device system consists one piece of ESP8266 Node MCU…