In this paper, we present a lightweight, media-supporting quiz application for mobile devices. The idea is to use the students' own smartphones as voting devices and provide a quiz administration module which is integrated into the existing university's e-learning platform. For establishing the link between the devices and the platform we use dynamically generated Quick Response (QR) codes. The quiz is implemented as a web application, also providing the use of media content such as pictures and videos. We briefly evaluate our approach with respect to usability for students and lecturers, limits of the mobile browser technology and the QR code, and the impact on the university's network infrastructure.