Since both mobile libraries and library websites provide
similar services [7], models focusing on digital library
acceptance were a good source for finding relevant factors
affecting the acceptance of mobile digital library services.
Thong, Hang and Tam [45] added nine variables to the TAM
framework and organised them into three categories: interface
characteristics, organizational context, and individual
difference (see Fig. 1). These categories proved to have an
impact on adoption intention through perceived usefulness and
perceived ease of use of the digital library, specifically the
Open University of Hong Kong. The same categories
confirmed their impact on digital library acceptance in other
studies as well. Lee et al. 's [25] study of Malaysian
postgraduate students, Ramayah's [39] study of both
postgraduate and undergraduate Malaysian students, and
Jeong's [15] study of elementary students were all consistent
with the findings of Thong, Hong and Tam's model [45]. The
findings of that model showed that both perceived usefulness
and perceived ease of use are determinants of user acceptance
of digital libraries. Furthermore, interface characteristics and
individual differences affected perceived ease of use, while
organizational context (except for system accessibility)
influenced both perceived ease of use and perceived
usefulness of digital libraries. System accessibility had no
significant impact on perceived usefulness, but had a strong
impact on perceived ease of use.