Cars & Other Vehicles How does QR code record attendance? How does QR code record attendance? CourseKey's QR Code technology allows you to easily check-in and out of class and externships to verify and track your attendance. Once the QR code is displayed, students can simply scan in for attendance via the cameras on their own mobile device. Related Posts:How to block channels on smart TVs with step-by- step instructions.Discipline should be maintained in the classroom.How To Discipline should be maintained in the classroom.Maintaining classroom discipline is important.