David Dobbelstein, M.Sc.

David Dobbelstein joined the HCI group in October 2011. During his studies he was an intern at Daimler AG and at Nokia. 

David holds a M. Sc. in Applied Computer Science - Systems Engineering (2014) from University of Duisburg-Essen. He wrote his Master thesis in cooperation with Nokia Research in Sunnyvale (USA). The title of the master thesis was: Investigating Interaction Performance on a Novel Handheld Near-Eye Display.

Research interests

  • Wearable and Mobile Devices
  • Unobtrusive Interactions
  • Microinteractions
  • Augmented Reality

Teaching

  • Lectures, Projects and Seminars

  • Supervised Theses

    • Interactive Belt. An Unobtrusive Input Device for Head-Mounted Displays (Master Thesis Philipp Hock)
    • Implementierung und Evaluation eines mobilen textilen Touchpads an interaktiver Kleidung (Bachelor Thesis Eduard Lehr)
    • Novel Privacy Protective Interaction Concepts for Multi-Display Smartwatches (Master Thesis Stefan Rotter)
    • Fußgängernavigation durch räumliches vibro-taktiles Feedback um das Handgelenk basierend auf einer Smartwatch (Bachelor Thesis Philipp Henzler)
    • Designing Handheld Near-Eye Displays to improve Usability and to discover New Interaction Concepts (Master Thesis Andreas Blezu)
    • Developing a Turnable Trouser Button and a New Input Concept for Interaction with Google Glass (Bachelor Thesis Tobias Jöchle)
    • Combining the Interaction Space of a Smartphone and a Near-Eye Display (Bachelor Thesis Maya Halter)
    • Implementation and Evaluation of a Wall-mounted Glanceable Display (Diploma Thesis Michael Strauß)
    • Implicit user authentication for handheld devices via wrist-worn wearables (Master Thesis Gabriel Haas)
    • Developing a Miniaturized and Modular Olfactory Wearable for Scent-Based Notifications (Master Thesis Steffen Herrdum)
    • Interaktionstechnik zum Informationsaustausch mit alltäglichen Schnittstellen mit Hilfe eines am Handgelenk getragenen Tokens (Bachelor Thesis Kai Freissler)
    • SnapTouch - Concept and Implementation of a Flexible Multi-Location Touch Input Band (Master Thesis Tobias Arnold)
  • Open Topics for Theses

    If you are interested in writing a thesis, please send me an email or drop by my office.

Projects

  • Belt: An Unobtrusive Touch Input Device for Head-worn Displays

    Belt: An Unobtrusive Touch Input Device for Head-worn Displays

    Belt is a novel unobtrusive input device for wearable displays that incorporates a touch surface encircling the user’s hip. The wide input space is leveraged for a horizontal spatial mapping of quickly accessible information and applications. We discuss social implications and interaction capabilities for unobtrusive touch input and present our hardware implementation and a set of applications that benefit from the quick access time. In a qual- itative user study with 14 participants we found out that for short interactions (2-4 seconds), most of the surface area is considered as appropriate input space, while for longer interactions (up to 10 seconds), the front areas above the trouser pockets are preferred.

    Read more...

  • PocketThumb: a Wearable Dual-Sided Touch Interface

    PocketThumb: a Wearable Dual-Sided Touch Interface

     We present PocketThumb, a wearable touch interface for smart-eyewear that is embedded into the fabrics of the front trouser pocket. The interface is reachable from outside and inside of the pocket to allow for a combined dual-sided touch input. The user can control an absolute cursor with their thumb sliding along the fabric from the inside, while at the same time tapping or swiping with fingers from the outside to perform joint gestures. This allows for resting the hand in a comfortable and quickly accessible position, while performing interaction with a high expressiveness that is feasible in mobile scenarios. In a cursor-based target selection study, we found that our introduced dual-sided touch interaction is significantly faster in comparison to common single-sided absolute as well as relative touch interaction (∼19%, resp. ∼23% faster). The effect is largest in the mobile conditions standing and walking (up to ∼31% faster). 

    Read more...

  • inScent: a Wearable Olfactory Display as an Amplification for Mobile Notifications

    inScent: a Wearable Olfactory Display as an Amplification for Mobile Notifications

    We introduce inScent, a wearable olfactory display that can be worn in mobile everyday situations and allows the user to receive personal scented notifications, i.e. scentifications. Olfaction, i.e. the sense of smell, is used by humans as a sen- sorial information channel as an element for experiencing the environment. Olfactory sensations are closely linked to emo- tions and memories, but also notify about personal dangers such as fire or foulness. We want to utilize the properties of smell as a notification channel by amplifying received mobile notifications with artificially emitted scents. We built a wearable olfactory display that can be worn as a pendant around the neck and contains up to eight different scent aromas that can be inserted and quickly exchanged via small scent cartridges. Upon emission, scent aroma is vaporized and blown towards the user. A hardware - and software framework is presented that allows developers to add scents to their mobile applications. In a qualitative user study, participants wore the inScent wearable in public. We used subsequent semi-structured interviews and grounded theory to build a common understanding of the experience and derived lessons learned for the use of scentifications in mobile situations. 

    Read more...

Scientific Activities

  • Reviewer for CHI '14, '15, '16, '17, '18 TEI '15, '17, SUI '16, ICMI '15, '16, PERDIS '14, MUM '14, MobileHCI '13, IEEE VR '18
  • Student Volunteer CHI '15, ISMAR '14, MUM '12
  • SV Chair MobileHCI '15

Publications

2018

19.
D. Dobbelstein, E. Stemasov, D. Besserer, I. Stenske and E. Rukzio, "Movelet: a Self-Actuated Movable Bracelet for Positional Haptic Feedback on the User's Forearm" , In Proc. of ISWC 2018 (2018 ACM International Symposium on Wearable Computers) , Oct. 2018. https://youtu.be/HSHAU5eqtZA .
DOI: 10.1145/3267242.3267249
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/movelet.pdf
18.
D. Dobbelstein, T. Arnold and E. Rukzio, "SnapBand: a Flexible Multi-Location Touch Input Band" , In Proc. of ISWC 2018 (2018 ACM International Symposium on Wearable Computers) , Oct. 2018.
DOI: 10.1145/3267242.3267248
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/snapband.pdf

2017

17.
D. Dobbelstein, S. Herrdum and E. Rukzio, "inScent: a Wearable Olfactory Display as an Amplification for Mobile Notifications" , Proc. of ISWC 2017 (2017 ACM International Symposium on Wearable Computers) , Sep. 2017. https://www.uni-ulm.de/in/mi/mi-forschung/uulm-hci/projects/inscent-a-wearable-olfactory-display-as-an-amplification-of-mobile-notifications/ .
DOI: 10.1145/3123021.3123035
https://youtu.be/pzugi0AHaJs
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/inScent_a_Wearable_Olfactory_Display.pdf
16.
D. Dobbelstein, G. Haas and E. Rukzio, "The Effects of Mobility, Encumbrance, and (Non-)Dominant Hand on Interaction with Smartwatches" , Proc. of ISWC 2017 (2017 ACM International Symposium on Wearable Computers) , Sep. 2017.
DOI: 10.1145/3123021.3123033
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/The_Effects_of_Encumbrance_Mobility_and_Hand_On_Smartwatch_Interaction.pdf
15.
D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "PocketThumb: a Wearable Dual-Sided Touch Interface for Cursor-based Control of Smart-Eyewear" , Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) , Jun. 2017. https://www.uni-ulm.de/in/mi/mi-forschung/uulm-hci/projects/pocketthumb-a-wearable-dual-sided-touch-interface-for-cursor-based-control-of-smart-eyewear/ .
DOI: 10.1145/3090055
https://youtu.be/Ep0GUToErJg
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/pocketThumb.pdf
14.
M. Walch, J. Frommel, K. Rogers, F. Schüssel, P. Hock, D. Dobbelstein and M. Weber, "Evaluating VR Driving Simulation from a Player Experience Perspective" in CHI '17 Extended Abstracts on Human Factors in Computing Systems , New York, NY, USA : ACM , May 2017.
DOI: 10.1145/3027063.3053202
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Weber/2017/Walch2017Evaluating.pdf
13.
D. Dobbelstein, S. Herrdum and E. Rukzio, "Demonstration of inScent: a Wearable Olfactory Display as an Amplification for Mobile Notifications" , Proc. of UbiComp/ISWC 2017 Adjunct (Demo), ACM, 4 pages , 2017. https://www.youtube.com/watch?v=pzugi0AHaJs .
DOI: 10.1145/3123024.3123185
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/david_merged.pdf
12.
D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "Demonstration of PocketThumb: a Wearable Dual-Sided Touch Interface for Cursor-based Control of Smart-Eyewear" , Proc. of UbiComp/ISWC 2017 Adjunct (Demo), ACM, 4 pages , 2017. https://youtu.be/Ep0GUToErJg .
DOI: 10.1145/3123024.3123185
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/pocketthumb_demo.pdf

2016

11.
J. Gugenheimer, D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "FaceTouch: Enabling Touch Interaction in Display Fixed UIs for Mobile Virtual Reality" , In Proceedings of UIST 2016 (ACM Symposium on User Interface Software and Technology) , Oct. 2016. https://www.uni-ulm.de/en/in/mi/mi-forschung/research-group-rukzio/projects/facetouch-touch-interaction-for-mobile-virtual-reality/ .
DOI: 10.1145/2984511.2984576
https://youtu.be/MHbN9lseHYE
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/p49c.pdf
10.
D. Dobbelstein, "Unobtrusive Interaction for Wearable Computing" , (Doctoral Consortium) Adjunct Proc. of CHI 2016 (SIGCHI Conference on Human Factors in Computing Systems) , May 2016.
DOI: 10.1145/2851581.2859016
http://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiter/dobbelstein/Unobtrusive_Interaction_for_Wearable_Computing.pdf
9.
J. Gugenheimer, D. Dobbelstein, C. Winkler, G. Haas and E. Rukzio, "FaceTouch: Touch Interaction for Mobile Virtual Reality" , In Adj. Proc. (Demo) of CHI 2016 (SIGCHI Conference on Human Factors in Computing Systems) , May 2016. https://www.uni-ulm.de/en/in/mi/mi-forschung/research-group-rukzio/projects/facetouch-touch-interaction-for-mobile-virtual-reality/ .
DOI: 10.1145/2851581.2890242
https://youtu.be/tvAjOvXB56c
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/FaceTouchGugenheimer.pdf
8.
D. Dobbelstein, P. Henzler and E. Rukzio, "Unconstrained Pedestrian Navigation based on Vibro-tactile Feedback around the Wristband of a Smartwatch" , In Adj. Proc. (Poster) of CHI 2016 (SIGCHI Conference on Human Factors in Computing Systems) , May 2016.
DOI: 10.1145/2851581.2892292
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/UnconstrainedDobbelstein.pdf
7.
D. Dobbelstein, M. Walch, A. Köll, Şahin, T. Hartmann and E. Rukzio, "Reducing In-Vehicle Interaction Complexity: Gaze-Based Mapping of a Rotary Knob to Multiple Interfaces " in In Adj. Proc. (Poster) of MUM 2016 (International Conference on Mobile and Ubiquitous Multimedia) , International Conference on Mobile and Ubiquitous Multimedia , 2016.
DOI: 10.1145/3012709.3016064
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2016/Reducing_In-Vehicle_Interaction_Complexity_-_Gaze-Based_Mapping_of_a_Rotary_Knob_to_Multiple_Interfaces.pdf

2015

6.
D. Dobbelstein, P. Hock and E. Rukzio, "Belt: An Unobtrusive Touch Input Device for Head-worn Displays" in Proc. of CHI 2015 (SIGCHI Conference on Human Factors in Computing Systems) , Apr. 2015.
DOI: 10.1145/2702123.2702450
https://youtu.be/o0a46fhmBS8
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiterbereiche/dobbelstein/Belt_-_An_Unobtrusive_Touch_Input_Device_for_Head-worn_Displays.pdf
5.
C. Winkler, J. Gugenheimer, A. De Luca, G. Haas, P. Speidel, D. Dobbelstein and E. Rukzio, "Glass Unlock: Enhancing Security of Smartphone Unlocking through Leveraging a Private Near-eye Display" in Proc. of CHI 2015 (SIGCHI Conference on Human Factors in Computing Systems) , Apr. 2015.
DOI: 10.1145/2702123.2702316
https://www.youtube.com/watch?v=LqfbVckVUNs
http://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2015/Glass_unlock_winkler.pdf

2014

4.
K. Lyons, S. W. Kim, S. Seko, D. Nguyen, A. Dejardins, M. Vidal, D. Dobbelstein and J. Rubin, "Loupe: A Handheld Near-Eye Display" , Proc. of UIST 2014 (ACM User Interface Software and Technology Symposium), ACM, 4 pages , Oct. 2014. https://www.youtube.com/watch?v=0-LZOil6UE8 .
DOI: 10.1145/2642918.2647361
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/mitarbeiter/dobbelstein/Loupe_A_Handheld_Near-Eye_Display.pdf
3.
C. Winkler, J. Seifert, D. Dobbelstein and E. Rukzio, "Pervasive Information through Constant Personal Projection: The Ambient Mobile Pervasive Display (AMP-D)" in Proc. of CHI 2014 (SIGCHI Conference on Human Factors in Computing Systems), ACM, 10 pages, Honorable Mention Award , Apr. 2014.
DOI: 10.1145/2556288.2557365
http://www.youtube.com/watch?v=ahG06CERqAI
fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2014/winkler2168-AMP-D.pdf
2.
C. Winkler, M. Loechtefeld, D. Dobbelstein, A. Krueger and E. Rukzio, "SurfacePhone: A Mobile Projection Device for Single- and Multiuser Everywhere Tabletop Interaction" in Proc. of CHI 2014 (SIGCHI Conference on Human Factors in Computing Systems), ACM, 10 pages , CHI 2014 , Apr. 2014.
DOI: 10.1145/2556288.2557075
http://www.youtube.com/watch?v=DKofzCI7Yfw
fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2014/winkler672-surfacephone.pdf

2013

1.
[English] J. Seifert, D. Dobbelstein, D. Schmidt, P. Holleis and E. Rukzio, "From the Private Into the Public: Privacy-Respecting Mobile Interaction Techniques for Sharing Data on Surfaces." , Personal and Ubiquitous Computing, Springer, 14 pages , 2013. https://www.uni-ulm.de/index.php?id=47570 .
DOI: 10.1007/s00779-013-0667-x
http://youtu.be/nKI-3cAhgVs
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.100/institut/Papers/Prof_Rukzio/2013/2013-Seifert-et-al_FromThePrivateIntoThePublic.pdf