because interaction with these maps can be laborious the applications are often hard to use. Therefore, the usability of maps on mobile devices must be improved. In this paper we review the research that has been done to solve technical, environmental, and social challenges of mobile map use. We will discuss interaction, visualization, and adaptive user support for maps on mobile devices. We propose usability engineering as the method that should be used when developing maps for mobile applications. Categories and Subject Descriptors H.1.2 [Information Systems]: User/Machine Systems Human Factors. H.5.2 [Information Systems]: User Interfaces User Centered Design, Theory and Methods, Interaction Styles, Screen Design, Evaluation Methodology. J.7 [Computer Applications]: Computers in Other Systems Consumer Products.