Talk given at the BOBCATSSS 2015 conference - http://www.bobcatsss2015.com/. In the contribution “Features for the Future Library” the German project “mylibrARy” will be introduced, which is a cooperation project between the University of Applied Sciences in Potsdam, a public library in Berlin and one of the leading AR-software companies metaio GmbH from Munich. The conceptual process of a library AR-app will be presented as well as the results of a user study, which might give an answer to the question, what features of an app the library users want. Furthermore the possibilities of AR-technology for libraries in general will be discussed and contextualized within the concept of a modern user-friendly library.