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Usability Study of an Innovative Application in Public Transport by Using Hardware-Based Security Technology

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HCI in Mobility, Transport, and Automotive Systems (HCII 2021)

Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 12791))

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Abstract

As part of the OPTIMOS 2.0 funding project of the German Federal Ministry for Economic Affairs and Energy (BMWi), a partner develops the TicketIssuance app for secure hardware-based storage of high-priced tickets. The app has implemented a previously unknown technology using the Secure Element and the NFC interface. It is therefore imperative to investigate the usability of the app for a successful market launch. For this purpose, user tests of a prototype of the app were conducted using the think-aloud method. This study analyses the results of five tasks. Test subjects rate the expected and perceived difficulty level for each task. That forms the basis for identifying improvement strategies. The test subjects’ performance, the frequency of errors and problems encountered, and the need for moderator’s support form the basis for prioritizing usability items within the tasks. The developed structure to determine the test tasks’ prioritization and usability items, layout, navigation, handling, wording, system, and data economy offers improvements to increase usability.

Furthermore, the study investigates the determination of a suitable sample size for usability testing.

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Authors and Affiliations

  1. Technische Universität Dresden, Dresden, Germany

    Gertraud Schäfer, Andreas Kreisel & Ulrike Stopka

Authors
  1. Gertraud Schäfer
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  2. Andreas Kreisel
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  3. Ulrike Stopka
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Corresponding author

Correspondence to Gertraud Schäfer .

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Editors and Affiliations

  1. Technische Universität Ilmenau, Ilmenau, Germany

    Heidi Krömker

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Schäfer, G., Kreisel, A., Stopka, U. (2021). Usability Study of an Innovative Application in Public Transport by Using Hardware-Based Security Technology. In: Krömker, H. (eds) HCI in Mobility, Transport, and Automotive Systems. HCII 2021. Lecture Notes in Computer Science(), vol 12791. Springer, Cham. https://doi.org/10.1007/978-3-030-78358-7_7

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  • DOI: https://doi.org/10.1007/978-3-030-78358-7_7

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-78357-0

  • Online ISBN: 978-3-030-78358-7

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