@article{auda2023scoping, title = {A Scoping Survey on Cross-Reality Systems}, author = {Jonas Auda and Uwe Gruenefeld and Sarah Faltaous and Sven Mayer and Stefan Schneegass}, year = {2023}, journal = {ACM Comput. Surv.}, publisher = {Association for Computing Machinery}, address = {New York, NY, USA}, doi = {10.1145/3616536}, issn = {0360-0300}, url = {https://sven-mayer.com/wp-content/uploads/2023/12/auda2023scoping.pdf}, date = {2023-09-01}, abstract = {Immersive technologies such as Virtual Reality (VR) and Augmented Reality (AR) empower users to experience digital realities. Known as distinct technology classes, the lines between them are becoming increasingly blurry with recent technological advancements. New systems enable users to interact across technology classes or transition between them - referred to as cross-reality systems. Nevertheless, these systems are not well-understood. Hence, in this paper, we conducted a scoping literature review to classify and analyze cross-reality systems proposed in previous work. First, we define these systems by distinguishing three different types. Thereafter, we compile a literature corpus of 306 relevant publications, analyze the proposed systems, and present a comprehensive classification, including research topics, involved environments, and transition types. Based on the gathered literature, we extract nine guiding principles that can inform the development of cross-reality systems. We conclude with research challenges and opportunities.}, keywords = {augmented reality, Augmented Virtuality, Bystander Inclusion, collaboration, Cross-Reality Systems, Reality-Virtuality Continuum, Transitional Interfaces, virtual reality} }