Dear all, MUM 2026, the 25th International Conference on Mobile and Ubiquitous Multimedia, will be held in Glasgow, United Kingdom, December 1st –4th. MUM is an interdisciplinary forum for advances in research of mobile and ubiquitous multimedia systems, applications, and services. At MUM, academics and practitioners discuss challenges and achievements in this field from diverse perspectives, such as interaction techniques, user research, system development, software solutions, and devices. This edition of MUM aims to continue the tradition of innovation and excellence in research established by previous MUM conferences. The calls for full/short papers and for posters/demos are now online: https://mum-conf.org/2026/. All accepted publications will appear in the ACM Digital Library. ... Call for Full and Short Papers Summary * Anonymous submissions (double-blind review) * Length (using LaTeX template<https://www.overleaf.com/latex/templates/acm-conference-proceedings-primary-article-template/wbvnghjbzwpc> or Word template<https://authors.acm.org/binaries/content/assets/publications/taps/acm_submission_template.docx>) * Short papers: 7 pages maximum (in single column format, excluding references) * Long papers: 16 pages maximum (in single column format, excluding references) * Timeline (all deadlines are AoE) (All submissions through EasyChair<https://easychair.org/conferences/?conf=mum-2026>) * Paper Submission: August 20, 2026 * Decision Notification: October 5, 2026 * Camera-ready: October 22, 2026 * Upon acceptance: mandatory presentation at the conference Topics of Interest We welcome submissions of high-quality papers that offer original and unpublished contributions relevant to mobile and ubiquitous multimedia. Paper topics include, but are not limited to, the following: * Prototypes and systems tackling relevant technical challenges * Novel applications for mobile and ubiquitous gaming, learning, entertainment, social networking, and advertising * Augmented, mixed, and virtual reality systems and applications * Case studies, field trials, or user experience evaluations of new applications and services * Context-aware and location-based mobile and ubiquitous services * Metrics and measures for evaluating and testing mobile and ubiquitous systems * Privacy and security-related challenges to multimedia systems * Social implications of mobile and ubiquitous multimedia systems * Interaction and collaboration with human-centered AI systems * Tools and development environments for building mobile, wearable, and ubiquitous multimedia systems * User interfaces, multimodal interaction, interaction design, and interaction techniques for mobile and ubiquitous systems * Interaction design for automotive and other modes of transportation * Fabrication and device prototyping Paper Chairs Karola Marky- Ruhr University Bochum, Germany [email protected]<mailto:[email protected]> Marion Koelle- Hochschule RheinMain/ University of Applied Sciences and Arts, Germany [email protected]<mailto:[email protected]> For more information about preparing your submission, registering and acceptance of submission, visit our website: https://www.mum-conf.org/2026/index.php?web=papers .... Call for Posters and Demos The MUM Posters and Demos track provides an opportunity for researchers and practitioners to share early-stage, ongoing, or experimental work with the MUM community in an interactive setting. We welcome contributions presented as posters (summarising work in progress, preliminary findings, novel research directions, or provoking position statements) or demos (showcasing working systems, prototypes, applications, or research projects). Demos may be accompanied by a poster as part of the demo setup, in which case the submission should describe this in the Presentation section below. Submissions may describe preliminary research results that have not yet been fully designed, implemented, or tested but show great promise; summarise small-scale studies; introduce novel, challenging, or provoking research directions; or present interactive artefacts that attendees can engage with hands-on. MUM maintains an open and experimental attitude: whether you have built a mobile app, designed a new device, created an interactive system, developed innovative software, or have early findings you'd like to discuss, we want to see your work, play with it, and talk about it. TOPICS OF INTEREST Topics of interest are those defined for the main paper conference track. They include, but are not limited to: * Prototypes and systems tackling relevant technical challenges * Novel applications for mobile and ubiquitous gaming, learning, entertainment, social networking, and advertising * Augmented, mixed, and virtual reality systems and applications * Case studies, field trials, or user experience evaluations of new applications and services * Context-aware and location-based mobile and ubiquitous services * Metrics and measures for evaluating and testing mobile and ubiquitous systems * Privacy and security-related challenges to multimedia systems * Social implications of mobile and ubiquitous multimedia systems * Interaction and collaboration with human-centered AI systems * Tools and development environments for building mobile, wearable, and ubiquitous multimedia systems * User interfaces, multimodal interaction, interaction design, and interaction techniques for mobile and ubiquitous systems * Interaction design for automotive and other modes of transportation * Fabrication and device prototyping Timeline Submission deadline October 9th, 2026 (AoE) Notification October 23rd, 2026 (AoE) Camera-ready deadline November 3rd, 2026 (AoE) Conference dates December 1st - December 4th, 2026 Posters and Demos Chairs Tommaso Turchi, University of Pisa [email protected]<mailto:[email protected]> Shaun Macdonald, University of Glasgow [email protected]<mailto:[email protected]> Julia Dominiak, Lodz University of Technology [email protected].<mailto:[email protected]> For more information about preparing your submission, registering and acceptance of submission, visit our website: https://www.mum-conf.org/2026/index.php?web=posters