# Interaction in eXtended Reality Applications for Cultural Heritage  
[PERSON]  
1 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; [EMAIL_ADDRESS] (V.O.); [EMAIL_ADDRESS] (I.L-K.); [EMAIL_ADDRESS] (D.B.); [EMAIL_ADDRESS] (I.P.); [EMAIL_ADDRESS] (E.S.)  
[PERSON]  
1 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; [EMAIL_ADDRESS] (V.O.); [EMAIL_ADDRESS] (I.L-K.); [EMAIL_ADDRESS] (D.B.); [EMAIL_ADDRESS] (I.P.); [EMAIL_ADDRESS] (E.S.)  
[PERSON]  
1 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; [EMAIL_ADDRESS] (V.O.); [EMAIL_ADDRESS] (I.L-K.); [EMAIL_ADDRESS] (D.B.); [EMAIL_ADDRESS] (I.P.); [EMAIL_ADDRESS] (E.S.)  
[PERSON]  
2 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; [EMAIL_ADDRESS] (V.O.); [EMAIL_ADDRESS] (I.L-K.); [EMAIL_ADDRESS] (D.B.); [EMAIL_ADDRESS] (I.P.); [EMAIL_ADDRESS] (E.S.)  
[PERSON]  
2 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; [EMAIL_ADDRESS] (V.O.); [EMAIL_ADDRESS] (I.P.); [EMAIL_ADDRESS] (E.S.)  
2 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; [EMAIL_ADDRESS] (I.L-K.); [EMAIL_ADDRESS] (D.B.); [EMAIL_ADDRESS] (E.S.)  
2 Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; vokanovic@etf.  
Technological development is introducing new ways of interactive communication in the domain of multimedia cultural heritage applications. Virtual and Augmented Reality technologies are facilitating access and increasing the value and public awareness of cultural and natural heritage [1; 2]. Assessing user experience is a complex process that includes an evaluation of the ease of use and effectiveness of the media as well as the entertainment it provides.  
The importance of entertainment in digital applications is its capacity to create a motivating and successful environment for learning [3], which introduces a new combined factor: edutainment (education + entertainment). Another important factor is immersion, a measure of absorption and engagement with the virtual multimedia environment. Immersion is important to entertainment, and it is difficult to evaluate with the standard user testing methods [3].  
The use of interactive digital storytelling is expanding to different fields. In our research, we focus on the application of interactive digital storytelling in eXtended Reality (XR) cultural heritage presentations, with XR referring to both the virtual and the combined real and virtual environments and interactions (Virtual and Augmented Reality). We study the means of conveying rich historic information in an engaging and immersive way, not just to visitors of exhibitions but also to the general audience online.  
In this paper, we present our experience in implementing interaction on eXtended Reality applications for cultural heritage presentations. We describe the ways in which the users communicate with our applications, how they move in virtual environments and interact with augmented reality content.  
The paper is organized into the following sections. Section 2 gives an introduction to digital storytelling and its definitions. An overview of relevant papers is presented in Section 3. Section 4 explains problems and solutions in the implementation of XR interactive storytelling applications with different technologies in several case studies. Section 5 describes the user evaluation process, and in Section 6, conclusions and results are discussed.