This document discusses innovative mobile interfaces for libraries. It begins by noting the increasing adoption of smartphones and tablets. It then addresses different levels of mobile readiness among libraries, from theoretical to fully implementing mobile services. It provides examples of how libraries can engage users and customize the mobile experience. Finally, it offers advice on starting a mobile initiative, including talking to IT departments and choosing content management systems. The overall message is that libraries should find ways to embrace mobile technologies and provide services optimized for mobile users.