Christian Holz

Researcher in Human-Computer Interaction at Microsoft Research, Redmond, WA

Christian Holz


Ultra-mobile devices that support spatial interaction

My research is based on the observation that the miniaturization of mobile devices has come to a halt, because input controls have to be large enough to be operated. However, this halt is not due to hardware limitations. I believe that further miniaturization and thus true ubiquity of mobile devices requires a better understanding of human factors. In my research, I investigate human factors to create ultra-small devices. My tools include software engineering, hardware prototyping, depth cameras and various smaller sensors.


  1. Holz, C. and Knaust, M. Biometric Touch Sensing: Integrating Continuous Authentication Into Regular Touch Interaction. In Proceedings of UIST '15, 303–312. Biotouch project
  2. Jin, H., Holz, C. and Hornbæk, K. Tracko: Ad-hoc Mobile 3D Tracking Using Bluetooth Low Energy and Acoustic Signals For Cross-Device Interaction. In Proceedings of UIST '15, 147–156. Tracko project
  3. Chen, Y., Bentley, F., Holz, C. and Xu, C. Sharing (and Discussing) the Moment: The Conversations that Occur Around Shared Mobile Media. In Proceedings of MobileHCI '15, 264–273. PairappMessaging project
  4. Holz, C., Bentley, F., Church, K. and Patel, M. "I’m just on my phone and they’re watching TV": Quantifying mobile device use while watching television. In Proceedings of TVX '15, 93–102. TV+mobile devices project
  5. Holz, C., Buthpitiya, S. and Knaust, M. Bodyprint: Biometric User Identification on Mobile Devices Using the Capacitive Touchscreen to Scan Body Parts. In Proceedings of CHI '15, 3011–3014. Bodyprint project
  6. Bentley, F., Chen, Y. and Holz, C. Reducing the Stress of Coordination: Sharing Travel Time Information Between Contacts on Mobile Phones. In Proceedings of CHI '15, 967–970. Honorable mention. Time Away project
  7. Holz, C. and Baudisch, P. Fiberio: A Touchscreen That Senses Fingerprints. In Proceedings of UIST '13, 41–50. Best paper award. Fiberio project
  8. Baudisch, P., Pohl, H., Reinicke, S., Wittmers, E., Luehne, P., Knaust, M., Koehler, S., Schmidt, P. and Holz, C. Imaginary Reality Gaming: Ball Games Without a Ball. In Proceedings of UIST '13, 405–410. QuantumBall project
  9. Steins, C., Gustafson, S., Holz, C. and Baudisch, P. Imaginary Devices: Gesture-Based Interaction Mimicking Traditional Input Devices. In Proceedings of MobileHCI '13, 123–126. Imaginary Devices project
  10. Braenzel, A., Holz, C., Hoffmann, D., Schmidt, D., Knaust, M., Luehne, P., Meusel, R., Richter, S. and Baudisch, P. GravitySpace: Tracking Users and Their Poses in a Smart Room Using a 2D Pressure-Sensing Floor. In Proceedings of CHI '13, 725–734. Honorable mention. GravitySpace project
  11. Holz, C., Grossman, T., Fitzmaurice, G. and Agur, A. Implanted User Interfaces. In Proceedings of CHI '12, 503–512. Implanted User Interfaces project
  12. Richter, S., Holz, C. and Baudisch, P. Bootstrapper: Recognizing Tabletop Users by their Shoes. In Proceedings of CHI '12, 1249–1252. Bootstrapper project
  13. Gustafson, S., Holz, C. and Baudisch, P. Imaginary Phone: Learning Imaginary Interfaces by Transferring Spatial Memory from a Familiar Device. In Proceedings of UIST '11, 283–292. Imaginary Phone project
  14. Holz, C. and Wilson, A.D. Data Miming: Inferring Spatial Object Descriptions from Human Gesture. In Proceedings of CHI '11, 811–820. Data Miming project
  15. Holz, C. and Baudisch, P. Understanding Touch. In Proceedings of CHI '11, 2501–2510. Understanding Touch project
  16. Augsten, T., Kaefer, K., Meusel, R., Fetzer, C., Kanitz, D., Stoff., T., Becker, T., Holz, C. and Baudisch, P. Multitoe: High-Precision Interaction with Back-Projected Floors Based on High-Resolution Multi-Touch Input. In Proceedings of UIST '10, 209–218. Multitoe project
  17. Holz, C. and Baudisch, P. The Generalized Perceived Input Point Model and How to Double Touch Accuracy by Extracting Fingerprints. In Proceedings of CHI '10, 581–590. The Generalized Perceived Input Point Model project
  18. Holz, C. and Feiner, S. Relaxed Selection Techniques for Querying Time-Series Graphs. In Proceedings of UIST '09, 213–222. Relaxed Selection Techniques project

Apple Keynote and Adobe Illustrator Utilities