This document discusses how QR (Quick Response) codes can be used by academic libraries to reach mobile users and enhance library services. It provides an overview of a case study of the PUMBA Library at the University of Pune, which implemented QR codes to provide mobile access to online journals, a university song video, and other resources. The document also defines what a QR code is, the different types of information they can contain, examples of their use, and how QR codes can help increase the physical use of libraries and engage users on mobile devices.