Fraunhofer-Institut für Angewandte Informationstechnik FIT

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  • Publication
    Alexa, We Need to Talk: A Data Literacy Approach on Voice Assistants
    ( 2021)
    Pins, D.
    ;
    Jakobi, T.
    ;
    Boden, A.
    ;
    Alizadeh, F.
    ;
    Wulf, V.
    Voice assistants (VA) collect data about users' daily life including interactions with other connected devices, musical preferences, and unintended interactions. While users appreciate the convenience of VAs, their understanding and expectations of data collection by vendors are often vague and incomplete. By making the collected data explorable for consumers, our research-through-design approach seeks to unveil design resources for fostering data literacy and help users in making better informed decisions regarding their use of VAs. In this paper, we present the design of an interactive prototype that visualizes the conversations with VAs on a timeline and provides end users with basic means to engage with data, for instance allowing for filtering and categorization. Based on an evaluation with eleven households, our paper provides insights on how users reflect upon their data trails and presents design guidelines for supporting data literacy of consumers in the context of VAs.
  • Publication
    Introduction: Socio-informatics-practice makes perfect?
    ( 2018)
    Randall, D.
    ;
    Rohde, M.
    ;
    Schmidt, K.
    ;
    Wulf, V.
  • Publication
    Research into design-research practices
    ( 2018)
    Randall, D.
    ;
    Dyrks, T.
    ;
    Nett, B.
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    Pipek, V.
    ;
    Ramirez, L.
    ;
    Stevens, G.
    ;
    Wagner, I.
    ;
    Wulf, V.
  • Publication
    Grounded design: A research paradigm in practice-based computing
    ( 2018)
    Stevens, G.
    ;
    Rohde, M.
    ;
    Korn, M.
    ;
    Wulf, V.
  • Publication
    Preface
    ( 2018)
    Wulf, V.
    ;
    Pipek, V.
    ;
    Randall, D.
    ;
    Rohde, M.
    ;
    Schmidt, K.
    ;
    Stevens, G.
  • Publication
    Mobility in Later Life
    ( 2017)
    Stein, M.
    ;
    Meurer, J.
    ;
    Boden, A.
    ;
    Wulf, V.
    We present the results of a design case study focusing on supporting the daily transportation of elderly in Germany. We conceptualized, developed and studied the appropriation of a transportation information system intended to ease switching between different transportation modes. Based on a literature review and a context study with 21 interviews we explored routinized transport mode usage and barriers when switching between modes. Iteratively, we co-designed a transport platform accessible via a website, a mobile app, and an iTV app. We further looked at the appropriation of the platform into the daily lives of 19 persons. Studying the appropriation highlighted different factors that facilitate the adoption of alternative transport options. The factors included reducing uncertainty, complementing transport information with context information (e.g. weather) and providing informational access based on the user's preferences as well as fitting in with the situational needs (activity related).
  • Publication
    What Happened in my Home?
    ( 2017)
    Castelli, N.
    ;
    Ogonowski, C.
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    Jakobi, T.
    ;
    Stein, M.
    ;
    Stevens, G.
    ;
    Wulf, V.
    Smart home systems change the way we experience the home. While there are established research fields within HCI for visualizing specific use cases of a smart home, studies targeting user demands on visualizations spanning across multiple use cases are rare. Especially, individual data-related demands pose a challenge for usable visualizations. To investigate potentials of an end-user development (EUD) approach for flexibly supporting such demands, we developed a smart home system featuring both pre-defined visualizations and a visualization creation tool. To evaluate our concept, we installed our prototype in 12 households as part of a Living Lab study. Results are based on three interview studies, a design workshop and system log data. We identified eight overarching interests in home data and show how participants used pre-defined visualizations to get an overview and the creation tool to not only address specific use cases but also to answer questions by creating temporary visualizations.
  • Publication
    Refugees & HCI Workshop
    ( 2017)
    Talhouk, R.
    ;
    Vlachokyriakos, V.
    ;
    Weibert, A.
    ;
    Aal, K.
    ;
    Ahmed, S.I.
    ;
    Fisher, K.
    ;
    Wulf, V.
    Over 21 million refugees are residing in camps, journeying through Europe or resettling in new countries [19]. The magnitude of the humanitarian crisis calls for technological innovation in addressing the challenges being faced by refugees and humanitarian aid stakeholders. At our CHI 2016 Special Interest Group (SIG) on Refugees and Human Computer Interaction (HCI) [17], HCI researchers expressed interest in exploring the difficulties faced by refugees and having a participatory approach when addressing these difficulties. Additionally, further consideration is needed regarding the methodological, organizational and practical challenges in working with refugee communities. Accordingly, this one-day workshop followed by a day of informal meetings with stakeholders aims to (1) explore research methods that can be adapted and applied to refugee contexts and to (2) formulate a research agenda for future work. Participants will be joined by members of organizations that engage with refugees in Denver and be presented with testimonials from refugees in order to develop a research agenda.