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Exploring Usability through Wizard of Oz Testing - Developing a Gesture-Based Interface with Sensor Integration

Alvarez García, Victoria LU and Pham, Louise LU (2024) MAMM01 20241
Ergonomics and Aerosol Technology
Certec - Rehabilitation Engineering and Design
Abstract
This thesis, conducted in collaboration with Robert Bosch AB, investigates gesturebased interaction with the Smart Connected Sensor Platform (SCSP), focusing on gender and gaming background influences, user understanding of the SCSP’s capabilities, and the effectiveness of gamification and the Wizard of Oz (WoZ) testing technique. The research employed an iterative design process, progressing from lowfidelity paper prototypes to a high-fidelity interactive demo called Escape Robert’s Room, where participants used the SCSP and gestures to solve puzzles in pairs. The findings reveal that users preferred to use gestures as an interactor rather than embodying the object they wanted to interact with. Gender differences in gesture preferences... (More)
This thesis, conducted in collaboration with Robert Bosch AB, investigates gesturebased interaction with the Smart Connected Sensor Platform (SCSP), focusing on gender and gaming background influences, user understanding of the SCSP’s capabilities, and the effectiveness of gamification and the Wizard of Oz (WoZ) testing technique. The research employed an iterative design process, progressing from lowfidelity paper prototypes to a high-fidelity interactive demo called Escape Robert’s Room, where participants used the SCSP and gestures to solve puzzles in pairs. The findings reveal that users preferred to use gestures as an interactor rather than embodying the object they wanted to interact with. Gender differences in gesture preferences were minimal, with women tending to plan gestures collaboratively, while men were more spontaneous and used larger, exaggerated gestures. Gaming background did not affect gesture choice or performance. Users generally understood the sensor capabilities, with gamification proving effective in engaging them, although some users felt that the game’s focus overshadowed the sensor features. The WoZ technique, though valuable, proved less effective due to inconsistencies in the prototype’s response, leading to inaccurate perceptions of sensor precision and abilities.
This research highlights the importance of continuously reviewing and validating designs with user feedback to create effective, user-centered solutions. The Escape Robert’s Room prototype shows promise for further development, particularly if integrated with SCSP for demo purposes, providing valuable insights for optimizing gesture-based interfaces and enhancing user interaction with sensors (Less)
Abstract (Swedish)
Denna avhandling, genomförd i samarbete med Robert Bosch AB, undersöker gestbaserad interaktion med Smart Connected Sensor Platform (SCSP), med fokus på köns- och spelbakgrundspåverkan, användarens förståelse för SCSP kapabiliteter samt effektiviteten av gamification och Wizard of Oz (WoZ) testtekniken. Forskningen använde en iterativ designprocess och utvecklade lo-fi pappersprototyper samt en interaktiv hi-fi prototyp demo kallad Escape Robert’s Room, där deltagarna använde SCSP och gester för att lösa pussel i par. Resultaten visar att användarna föredrog att använda gester som en interaktor snarare än att gestalta objektet de ville interagera med. Könsskillnader i gestpreferenser var minimala, där kvinnor tenderade att planera gesterna... (More)
Denna avhandling, genomförd i samarbete med Robert Bosch AB, undersöker gestbaserad interaktion med Smart Connected Sensor Platform (SCSP), med fokus på köns- och spelbakgrundspåverkan, användarens förståelse för SCSP kapabiliteter samt effektiviteten av gamification och Wizard of Oz (WoZ) testtekniken. Forskningen använde en iterativ designprocess och utvecklade lo-fi pappersprototyper samt en interaktiv hi-fi prototyp demo kallad Escape Robert’s Room, där deltagarna använde SCSP och gester för att lösa pussel i par. Resultaten visar att användarna föredrog att använda gester som en interaktor snarare än att gestalta objektet de ville interagera med. Könsskillnader i gestpreferenser var minimala, där kvinnor tenderade att planera gesterna mer i samarbete, medan män var mer spontana och använde större, mer exagérerade gester. Spelbakgrund påverkade inte gestval eller prestation. Användarna förstod generellt sensorernas kapabiliteter, och gamification visade sig vara effektivt för att engagera dem, även om vissa användare kände att fokuset kring spelet ibland överskuggade sensorernas funktioner. WoZ-tekniken, även om den var värdefull, visade sig vara mindre effektiv på grund av inkonsekvenser i prototypens återkoppling, vilket ledde till felaktiga uppfattningar om sensorernas precision och förmåga. Denna forskning understryker vikten av att kontinuerligt granska och validera designer med användaråterkoppling för att skapa effektiva, användarcentrerade lösningar. Escape Robert’s Room-prototypen visar lovande resultat för vidare utveckling, särskilt om den integreras med SCSP för demoändamål, och ger värdefulla insikter för att optimera gestbaserade gränssnitt och förbättra användarinteraktionen med sensorer. (Less)
Please use this url to cite or link to this publication:
author
Alvarez García, Victoria LU and Pham, Louise LU
supervisor
organization
course
MAMM01 20241
year
type
H2 - Master's Degree (Two Years)
subject
keywords
User centered design, Wizard of Oz, gesture based interface, gamification, interactive demonstration
language
English
id
9178907
date added to LUP
2024-12-20 08:23:00
date last changed
2024-12-20 08:23:00
@misc{9178907,
  abstract     = {{This thesis, conducted in collaboration with Robert Bosch AB, investigates gesturebased interaction with the Smart Connected Sensor Platform (SCSP), focusing on gender and gaming background influences, user understanding of the SCSP’s capabilities, and the effectiveness of gamification and the Wizard of Oz (WoZ) testing technique. The research employed an iterative design process, progressing from lowfidelity paper prototypes to a high-fidelity interactive demo called Escape Robert’s Room, where participants used the SCSP and gestures to solve puzzles in pairs. The findings reveal that users preferred to use gestures as an interactor rather than embodying the object they wanted to interact with. Gender differences in gesture preferences were minimal, with women tending to plan gestures collaboratively, while men were more spontaneous and used larger, exaggerated gestures. Gaming background did not affect gesture choice or performance. Users generally understood the sensor capabilities, with gamification proving effective in engaging them, although some users felt that the game’s focus overshadowed the sensor features. The WoZ technique, though valuable, proved less effective due to inconsistencies in the prototype’s response, leading to inaccurate perceptions of sensor precision and abilities.
This research highlights the importance of continuously reviewing and validating designs with user feedback to create effective, user-centered solutions. The Escape Robert’s Room prototype shows promise for further development, particularly if integrated with SCSP for demo purposes, providing valuable insights for optimizing gesture-based interfaces and enhancing user interaction with sensors}},
  author       = {{Alvarez García, Victoria and Pham, Louise}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Exploring Usability through Wizard of Oz Testing - Developing a Gesture-Based Interface with Sensor Integration}},
  year         = {{2024}},
}