In order to provide digital library services to those users whose location is constantly changing, whose network connections are through a wireless medium, and whose computing power includes RFID technology we introduce some aspects that need to be considerate in the development of a RFID-based DL infrastructure for e-learning. In this paper, we identify issues that arise when users are mobile, classify queries that are specific to mobile users and introduce an architecture that supports flexible and transparent access to digital libraries for mobile users with the usage of RFID tags.