@phdthesis{Mayer:2019:thesis,
 abstract = {Since the first digital computer in 1941 and the first personal computer back in 1975, the way we interact with computers has radically changed. The keyboard is still one of the two main input devices for desktop computers which is accompanied most of the time by a mouse or trackpad. However, the interaction with desktop and laptop computers today only make up a small percentage of current interaction with computing devices. Today, we mostly interact with ubiquitous computing devices, and while the first ubiquitous devices were controlled via buttons, this changed with the invention of  touchscreens.  Moreover, the phone as the most prominent ubiquitous computing device is heavily relying on touch interaction as the dominant input mode. Through direct touch, users can directly interact with graphical user interfaces (GUIs). GUI controls can directly be manipulated by simply touching them. However, current touch devices reduce the richness of touch input to two-dimensional positions on the screen.
In this thesis, we investigate the potential of enriching a simple touch with additional information about the finger touching the screen. We propose to use the user's finger orientation as two additional input dimensions. We investigate four key areas which make up the foundation to fully understand finger orientation as an additional input technique. With these insights, we provide designers with the foundation to design new gestures sets and use cases which take the finger orientation into account. We first investigate approaches to recognize finger orientation input and provide ready-to-deploy models to recognize the orientation. Second, we present design guidelines for a comfortable use of finger orientation. Third, we present a method to analyze applications in social settings to design use cases with possible conversation disruption in mind. Lastly, we present three ways how new interaction techniques like finger orientation input can be communicated to the user. This thesis contributes these four key insights to fully understand finger orientation as an additional input technique. Moreover, we combine the key insights to lay the foundation to evaluate every new interaction technique based on the same in-depth evaluation.},
 address = {Paffenwaldring. 5a, 70569 Stuttgart, Germany},
 author = {Sven Mayer},
 date = {2019-03-01},
 doi = {10.18419/opus-10397},
 keywords = {capacitive sensing, Finger orientation, interaction technique, mobile device, modeling, TensorFlow},
 pubstate = {published},
 school = {University of Stuttgart},
 title = {Finger Orientation as an Additional Input Dimension for Touchscreens},
 tppubtype = {phdthesis},
 url = {http://sven-mayer.com/wp-content/uploads/2019/04/mayer2019thesis.pdf},
 year = {2019}
}