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Bitbarista: Exploring perceptions of data transactions in the internet of things

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    Rights statement: © ACM, 2017. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems, 10.1145/3025453.3025878

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Original languageEnglish
Title of host publicationCHI '17
Subtitle of host publicationProceedings of the 2017 CHI Conference on Human Factors in Computing Systems
Place of PublicationNew York
Number of pages12
ISBN (Print)9781450346559
Publication statusPublished - 11 May 2017
EventSIGCHI Conference 2017 - Denver, United States
Duration: 6 May 201711 May 2017

Publication series



ConferenceSIGCHI Conference 2017
CountryUnited States


We are surrounded by a proliferation of connected devices performing increasingly complex data transactions. Traditional design methods tend to simplify or conceal this complexity to improve ease of use. However, the hidden nature of data is causing increasing discomfort. This paper presents BitBarista, a coffee machine designed to explore perceptions of data processes in the Internet of Things. BitBarista reveals social, environmental, qualitative and economic aspects of coffee supply chains. It allows people to choose a source of future coffee beans, situating their choices within the pool of decisions previously made. In doing so, it attempts to engage them in the transactions that are required to produce coffee. Initial studies of BitBarista with 42 participants reveal challenges of designing for connected systems, particularly in terms of perceptions of data gathering and sharing, as well as assumptions generated by current models of consumption. A discussion is followed by a series of suggestions for increasing positive attitudes towards data use in interactive systems.


SIGCHI Conference 2017


Denver, United States

Event: Conference

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