Sensing student presence augmented reality for the lecture hall

In this article we describe an augmented reality approach in which cheapWiFi-sensing capabilities can be utilized to aid instructors in identifying who is in her classroom. This is achieved by locating a student´s WiFi enabled device such as a laptop, a tablet or a smart phone by measuring the devices signal strength and using this location to map a student´s digital photograph into a 3-D representation of the classroom and associating the students name. This paper presents and approach to the presented problem and concentrates on the sensing accuracy and the expected errors in such a setup.