BACKGROUNDCoordinated multi-display environments from the desktop, second-screen to gigapixel display walls are increasingly common. Personal and intimate mobile and wearable devices such as head-mounted displays, smartwatches, smartphones and tablets are rarely part of such multi-device ecosystems.METHODSWe conducted a literature research and an expert survey to identify challenges in mobile multi-device ecosystems.RESULTSWe present grounded challenges relevant for the design, development and use of mobile multi-device environments as well as opportunities for future research. While our surveys indicated that a large number of challenges have been identified, there seems to be little agreement among experts on the importance of individual challenges.CONCLUSIONBy presenting the identified challenges, we contribute to a better understanding about factors that impede the creation and use of mobile multi-device ecosystems and hope to contribute to shaping the research agenda on interacting with those systems.
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