About me

I am a lecturer and research group leader at the HCI lab of Jürgen Steimle at Saarland University. Previously, I was head of the HCI group at the Telecooperation Lab of Max Mühlhäuser at TU Darmstadt. I received a doctoral degree from TU Darmstadt where I explored 3D-printed interfaces. I have a background in computer science, psychology, and visual computing.

In addition, I have been an affiliated researcher at the SIRIUS Lab , lead by Mohamed Khamis, at the University of Glasgow from 2021 to 2022, where we have investigated tangible approaches to more useable security. Starting from July 2022, I am also an affiliated and visiting researcher at the HCC section, lead by Kasper Hornbæk, at the University of Copenhagen. Together with Daniel Ashbrook, we explore approaches to 3D print haptics, combining my previous research on Fabrication and Haptics.

My current research interests are at the intersection of Human-Machine Interfaces and Digital Fabrication, but also include Extended Reality and Haptics. In particular, I enjoy to design, build, and evaluate interfaces that strive to be tailored to individual users or use cases rather than to a common denominator. Feel free to check out my recent publications or contact me.

Publications

A list of the latest peer-reviewed publications is also available on Google Scholar. My ORCID is 0000-0002-7332-3287.

2023

H. Elsayed, M. Weigel, J. Semsch, M. Mühlhäuser, M. Schmitz
Tactile Vectors for Omnidirectional Arm Guidance
Augmented Humans Conference - AHs '23
J. Rasch, V. Rusakov, M. Schmitz, F. Müller
Going, Going, Gone: Exploring Intention Communication for Multi-User Locomotion in Virtual Reality
Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems - CHI '23
Best Paper Award
D. Schön, T. Kosch, F. Müller, M. Schmitz, S. Günther, L. Bommhardt, M. Mühlhäuser
Tailor Twist: Assessing Rotational Mid-Air Interactions for Augmented Reality
Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems - CHI '23
F. Müller, D. Schmitt, A. Matviienko, D. Schön, S. Günther, T. Kosch, M. Schmitz
TicTacToes: Assessing Toe Movements as an Input Modality
Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems - CHI '23
T. Hirzle, F. Müller, F. Draxler, M. Schmitz, P. Knierim, K. Hornbæk
When XR and AI Meet - A Scoping Review on Extended Reality and Artificial Intelligence
Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems - CHI '23
N. Pourjafarian, F. Mjaku, M. Koelle, M. Schmitz, J. Borchers, J. Steimle
Handheld Tools Unleashed: Mixed-Initiative Physical Sketching with a Robotic Printer
Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems - CHI '23
J. Rasch, F. Müller, T. Kosch, M. Schmitz, S. Feger
Hands-On 3D Printed Electronics
Proceedings of the Seventeenth International Conference on Tangible, Embedded, and Embodied Interaction - TEI '23
M. Turner, M. Schmitz, M. Bierey, M. Khamis, K. Marky
Tangible 2FA: An In-the-Wild Investigation of User-Defined Tangibles for Two-Factor Authentication
Nineteenth Symposium on Usable Privacy and Security - SOUPS '23
A. Saberpour, A. Otaran, M. Schmitz, M. Mühlhaus, R. Dabral, D. Luvizon, A. Maekawa, M. Inami, C. Theobalt, J. Steimle
WRLKit: Computational Design of Personalized Wearable Robotic Limbs
Proceedings of the 36th Annual ACM Symposium on User Interface Software and Technology - UIST '23
H. Elsayed, M. Weigel, F. Müller, G. Ibrahim, J. Gugenheimer, M. Schmitz, S. Günther, M. Mühlhäuser
Understanding Stationary and Moving Direct Skin Vibrotactile Stimulation on the Palm
arXiv
J. von Willich, S. Günther, A. Matviienko, M. Schmitz, F. Müller, M. Mühlhäuser
DensingQueen: Exploration Methods for Spatial Dense Dynamic Data
Proceedings of the 2023 ACM Symposium on Spatial User Interaction - SUI '23

2022

M. Schmitz, S. Günther, D. Schön, F. Müller
Squeezy-Feely: Investigating Lateral Thumb-Index Pinching as an Input Modality
Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems - CHI '22
Best Paper Award
A. Matviienko, F. Müller, M. Schmitz, M. Fendrich, M. Mühlhäuser
SkyPort: Investigating 3D Teleportation Methods in Virtual Environments
Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems - CHI '22
Honourable Mention Award
S. Günther, J. Rasch, D. Schön, F. Müller, M. Schmitz, J. Riemann, A. Matviienko, M. Mühlhäuser
Smooth as Steel Wool: Effects of Visual Stimuli on the Haptic Perception of Roughness in Virtual Reality
Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems - CHI '22
K. Marky, K. Ragozin, G. Chernyshov, A. Matviienko, M. Schmitz, M. Mühlhäuser, C. Eghtebas, K. Kunze
”Nah, it’s just annoying!” A Deep Dive into User Perceptions of Two-Factor Authentication
ACM Transactions on Computer-Human Interaction - TOCHI
D. Schön, T. Kosch, M. Schmitz, F. Müller, S. Günther, J. Kreutz, M. Mühlhäuser
TrackItPipe: A Fabrication Pipeline To Incorporate Location and Rotation Tracking Into 3D Printed Objects
The 35rd Annual ACM Symposium on User Interface Software and Technology Adjunct Proceedings - UIST Adjunct '22
H. Elsayed, K. Kartono, D. Schön, M. Schmitz, M. Mühlhäuser, M. Weigel
Understanding Perspectives for Single- and Multi-Limb Movement Guidance in Virtual 3D Environments
28th ACM Symposium on Virtual Reality Software and Technology - VRST '22
M. Schmitz, S. Günther, K. Marky, F. Müller, A. Matviienko, A. Voit, R. Marky, M. Mühlhäuser, T. Kosch
Rethinking Smart Objects: The International Workshop on Interacting with Smart Objects in Interactive Spaces
Companion Proceedings of the 2022 Conference on Interactive Surfaces and Spaces - ISS '22

2021

M. Schmitz, J. Riemann, F. Müller, S. Kreis, M. Mühlhäuser
Oh, Snap! A Fabrication Pipeline to Magnetically Connect Conventional and 3D-Printed Electronics
Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems - CHI '21
Best Paper Award
M. Schmitz, F. Müller, M. Mühlhäuser, J. Riemann, H. Le
Itsy-Bits: Fabrication and Recognition of 3D-Printed Tangibles with Small Footprints on Capacitive Touchscreens
Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems - CHI '21
Honourable Mention Award
A. Matviienko, M. Langer, F. Müller, M. Schmitz, M. Mühlhäuser
VRtangibles: Assisting Children in Creating Virtual Scenes using Tangible Objects and Touch Input
Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems - CHI EA '21
K. Marky, A. Weiß, A. Matviienko, F. Brandherm, S. Wolf, M. Schmitz, F. Krell, F. Müller, M. Mühlhäuser, T. Kosch
Let's Frets! Assisting Guitar Students During Practice via Capacitive Sensing
Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems - CHI '21
M. Schmitz
From Atoms to Bits: 3D-Printed Human-Computer Interfaces
Proceedings of the 2021 Built Environment Additive Manufacturing Symposium - BE-AM '21
H. Elsayed, P. Hoffmann, S. Günther, M. Schmitz, M. Weigel, M. Mühlhäuser, F. Müller
CameraReady: Assessing the Influence of Display Types and Visualizations on Posture Guidance
Designing Interactive Systems Conference 2021 - DIS '21

2020

S. Günther, F. Müller, D. Schön, O. Elmoghazy, M. Mühlhäuser, M. Schmitz
Therminator: Understanding the Interdependency of Visual and On-Body Thermal Feedback in Virtual Reality
Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems - CHI '20
J. von Willich, M. Schmitz, F. Müller, D. Schmitt, M. Mühlhäuser
Podoportation: Foot-Based Locomotion in Virtual Reality
Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems - CHI '20
F. Müller, M. Schmitz, D. Schmitt, S. Günther, M. Funk, M. Mühlhäuser
Walk the Line: Leveraging Lateral Shifts of the Walking Path as an Input Modality for Head-Mounted Displays
Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems - CHI '20
K. Marky, M. Schmitz, V. Zimmermann, M. Herbers, K. Kunze, M. Mühlhäuser
3D-Auth: Two-Factor Authentication with Personalized 3D-Printed Items
Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems - CHI '20
S. Günther, D. Schön, F. Müller, M. Mühlhäuser, M. Schmitz
PneumoVolley: Pressure-based Haptic Feedback on the Head through Pneumatic Actuation
Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing Systems - CHI EA '20
H. Elsayed, M. Barrera Machuca, C. Schaarschmidt, K. Marky, F. Müller, J. Riemann, A. Matviienko, M. Schmitz, M. Weigel, M. Mühlhäuser
VRSketchPen: Unconstrained Haptic Assistance for Sketching in Virtual 3D Environments
26th ACM Symposium on Virtual Reality Software and Technology - VRST '20
H. Elsayed, M. Weigel, F. Müller, M. Schmitz, K. Marky, S. Günther, J. Riemann, M. Mühlhäuser
VibroMap: Understanding the Spacing of Vibrotactile Actuators across the Body
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies

2019

M. Schmitz, M. Stitz, F. Müller, M. Funk, M. Mühlhäuser
./trilaterate: A Fabrication Pipeline to Design and 3D Print Hover-, Touch-, and Force-Sensitive Objects
Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems - CHI '19
K. Marky, M. Schmitz, F. Lange, M. Mühlhäuser
Usability of Code Voting Modalities
Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems - CHI EA '19
F. Müller, J. McManus, S. Günther, M. Schmitz, M. Mühlhäuser, M. Funk
Mind the Tap: Assessing Foot-Taps for Interacting with Head-Mounted Displays
Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems - CHI '19
Honourable Mention Award
M. Schmitz
3D-Printed Interaction: Digital Fabrication of Touch, Deformation, and Environmental Sensing
TUprints, Technische Universität Darmstadt (Dissertation)
Also available as a book (ISBN 3750281629) on .com or .de.
K. Marky, F. Müller, M. Funk, A. Geiß, S. Günther, M. Schmitz, J. Riemann, M. Mühlhäuser
Teachyverse: Collaborative E-Learning in Virtual Reality Lecture Halls
Proceedings of Mensch und Computer 2019 - MuC'19

2018

F. Müller, M. Barnikol, M. Funk, M. Schmitz, M. Mühlhäuser
CaMea: Camera-Supported Workpiece Measurement for CNC Milling Machines
Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference on - PETRA '18
J. Riemann, M. Funk, M. Schmitz, C. Meurisch, M. Mühlhäuser
OverTop: Breaking the Boundaries of Tangible Tabletop Environments
Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers - UbiComp '18
J. Riemann, M. Schmitz, A. Hendrich, M. Mühlhäuser
FlowPut: Environment-Aware Interactivity for Tangible 3D Objects
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies
S. Günther, F. Müller, M. Schmitz, J. Riemann, N. Dezfuli, M. Funk, D. Schön, M. Mühlhäuser
CheckMate: Exploring a Tangible Augmented Reality Interface for Remote Interaction
Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems - CHI EA '18
M. Schmitz, M. Herbers, N. Dezfuli, S. Günther, M. Mühlhäuser
Off-Line Sensing: Memorizing Interactions in Passive 3D-Printed Objects
Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems - CHI '18
Honourable Mention Award
F. Müller, M. Schmitz, M. Funk, S. Günther, N. Dezfuli, M. Mühlhäuser
Personalized User-Carried Single Button Interfaces as Shortcuts for Interacting with Smart Devices
Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems - CHI EA '18

2017

S. Günther, M. Schmitz, F. Müller, J. Riemann, M. Mühlhäuser
BYO*: Utilizing 3D Printed Tangible Tools for Interaction on Interactive Surfaces
Proceedings of the 2017 ACM Workshop on Interacting with Smart Objects - SmartObject '17
M. Schmitz, J. Steimle, J. Huber, N. Dezfuli, M. Mühlhäuser
Flexibles: Deformation-Aware 3D-Printed Tangibles for Capacitive Touchscreens
Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems - CHI '17

2016

M. Schmitz
Exploring 3D Printed Interaction
Proceedings of the TEI '16: Tenth International Conference on Tangible, Embedded, and Embodied Interaction - TEI '16
J. Riemann, M. Khalilbeigi, M. Schmitz, S. Doeweling, F. Müller, M. Mühlhäuser
FreeTop: Finding Free Spots for Projective Augmentation
Proceedings of the 2016 CHI Conference Extended Abstracts on Human Factors in Computing Systems - CHI EA '16
M. Schmitz, A. Leister, N. Dezfuli, J. Riemann, F. Müller, M. Mühlhäuser
Liquido: Embedding Liquids into 3D Printed Objects to Sense Tilting and Motion
Proceedings of the 2016 CHI Conference Extended Abstracts on Human Factors in Computing Systems - CHI EA '16

2015

F. Müller, N. Dezfuli, M. Mühlhäuser, M. Schmitz, M. Khalilbeigi
Palm-based Interaction with Head-mounted Displays
Proceedings of the 17th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct - MobileHCI '15
M. Schmitz, M. Khalilbeigi, M. Balwierz, R. Lissermann, M. Mühlhäuser, J. Steimle
Capricate: A Fabrication Pipeline to Design and 3D Print Capacitive Touch Sensors for Interactive Objects
Proceedings of the 28th Annual ACM Symposium on User Interface Software & Technology - UIST '15

2014

R. Lissermann, J. Huber, M. Schmitz, J. Steimle, M. Mühlhäuser
Permulin: Mixed-Focus Collaboration on Multi-View Tabletops
Proceedings of the 32nd annual ACM conference on Human factors in computing systems - CHI '14

Working Experience & Education

Senior Researcher & Lecturer at Saarland University

May 2022 - current

Working with Jürgen Steimle at the HCI lab

Affiliated & Visiting Researcher at University of Copenhagen

Jul. 2022 - current

Working with Daniel Ashbrook at the HCC section

Affiliated Researcher at University of Glasgow

Jun. 2021 - Apr. 2022

Working with Mohamed Khamis and Karola Marky at the SIRIUS Lab

Postdoctoral Researcher & Head of HCI group at TU Darmstadt

Jan. 2019 - Apr. 2022

Working with Max Mühlhäuser at the Telecooperation Lab

Research Associate (Ph.D. student) at the Telecooperation Lab at TU Darmstadt(summa cum laude)

Nov. 2013 - Dec. 2018

Supervised by Max Mühlhäuser and Jürgen Steimle

Master in Computer Science (minor Psychology) (with distinction)

Apr. 2011 - Sep. 2013

At Technical University of Darmstadt

Master in Visual Computing (with distinction)

Apr. 2011 - Sep. 2013

At Technical University of Darmstadt

Bachelor in Computer Science (very good)

Apr. 2008 - Mar. 2011

At Technical University of Darmstadt

Awards & Grants

Community

  • 2024Associate Chair, ACM Symposium on User Interface Software and Technology (UIST) (see here)
  • 2024Associate Chair, ACM Conference on Human Factors in Computing Systems (CHI) (subcommittee Developing Novel Devices)
  • 2023Associate Chair, ACM Symposium on User Interface Software and Technology (UIST) (see here)
  • 2023Workshop & Tutorials Chair, International ACM Conference on Automotive User Interfaces and Interactive Vehicular Applications (AutomotiveUI) (see here)
  • 2023Associate Chair, ACM Conference on Human Factors in Computing Systems (CHI) (subcommittee User Experience and Usability)
  • 2023Paper Chair, Augmented Humans International Conference (AHs) (see here)
  • 2023Studio Chair, International Annual Conference on Tangible, Embedded, and Embodied Interaction (TEI) (see here)
  • 2023Associate Chair, International Annual Conference on Tangible, Embedded, and Embodied Interaction (TEI) (see here)
  • 2020- 2023Reviewer, ACM International Conference on Mobile Human-Computer Interaction (MobileHCI)
  • 2022 - 2023Reviewer, Springer Nature (Virtual Reality journal)
  • 2022Demo Chair, Conference Mensch und Computer (MuC) (see here)
  • 2022Paper Chair, Augmented Humans International Conference (AHs) (see here)
  • 2022Associate Chair, ACM Conference on Human Factors in Computing Systems (CHI) (subcommittee User Experience and Usability)
  • 2016 - 2022Reviewer, ACM Symposium on User Interface Software and Technology (UIST)
  • 2015 - 2022Reviewer, ACM Conference on Human Factors in Computing Systems (CHI)
  • 2021Reviewer, Symposium on Virtual Reality Software and Technology (VRST)
  • 2020Reviewer, ACM SIGCHI Conference on Designing Interactive Systems (DIS)
  • 2017 - 2020Reviewer, ACM Journal on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT)
  • 2017Proceedings Chair, Conference on Interactive Surfaces and Spaces (ISS)
  • 2014Student Volunteer, Conference on Interactive Tabletops and Surfaces (ITS)
  • 2014Reviewer, Conference on Interactive Tabletops and Surfaces (ITS)

Teaching

  • 2013 - currentCo-supervised over 35 bachelor, master, and Ph.D. theses
  • 2022 - currentLecture "Human-Computer Interaction" at Saarland University (as main lecturer)
  • 2022Lecture "Interactive Systems" at Saarland University (as main lecturer)
  • 2021 - 2022Lecture "Hands-On HCI" at TU Darmstadt (as supervisor of student groups)
  • 2018 - 2021Seminar on "Ubiquitous Computing" at TU Darmstadt (independent organization)
  • 2015 - 2021Practical Course "Advanced User Interfaces" at TU Darmstadt (independent organization)
  • 2014 - 2019Lecture "Human-Computer Interaction" at TU Darmstadt (with Max Mühlhäuser)
  • 2019Lecture "Mobile and Ubiquitous Computing" at TU Darmstadt (with Max Mühlhäuser)
  • 2015Practical Course on Digital Fabrication for Experience Design (with Marc Hassenzahl, University of Siegen)

Get In Touch

I am always looking for research and entrepreneurial opportunities in HCI and computer science. Feel free to contact me: