Traditional attendance marking is a labor-intensive process prone to human error and proxy attendance. This paper presents an automated Smart Attendance Tracking System (SATS) that utilizes Quick Response (QR) Code technology for instant identification. The system works by generating unique encrypted QR codes for each student, which are then scanned using a standard high-definition webcam. Built on a Java-based technical stack with a MySQL backend, the system processes image data to decode information in real-time. Experimental results demonstrate that the system can process an individual scan in less than 0.8 seconds with 100% accuracy in standard lighting. By eliminating physical registers and dedicated scanners, this system offers a cost-effective and highly scalable solution for educational institutions.