• Date and time: Wednesday 27.5. 13-15
• Location: TKK, Building T (T-talo), room T3, (Konemiehentie 2)
• Open for everyone interested

Patrick Baudisch (Hasso Plattner Institute in Berlin/Potsdam): Back-of-Device Interaction Allows Creating Very Small Touch Devices
"In this talk, I will discuss how to add pointing input capabilities to very small screen devices. On first sight, touchscreens seem to allow for particular compactness, because they integrate input and screen into the same physical space. The opposite is true, however, because the user's fingers occlude contents and prevent precision.
I argue that the key to touch-enabling very small devices is to use touch on the device backside. In order to study this, we have created a 2.4" prototype device; we simulate screens smaller than that by masking the screen. I present a user study in which participants completed a pointing task successfully across display sizes when using a back-of device interface. The touchscreen-based control condition (enhanced with the shift technique), in contrast, failed for screen diagonals below 1 inch. I present four form factor concepts based on back-of-device interaction and provide design guidelines extracted from a second user study."
http://www.patrickbaudisch.com/projects/nanotouch/index.html
Bio
Patrick Baudisch is a professor in Computer Science at Hasso Plattner Institute in Berlin/Potsdam and chair of the Human Computer Interaction Lab, as well as an Affiliate Professor in Computer Science at the University of Washington. Previously, he worked as a research scientist in the Adaptive Systems and Interaction Research Group at Microsoft Research. His research focus is on interaction with small screen devices, which evolved from a series of research projects on interaction with wall displays he started at Xerox PARC. While at Fraunhofer-IPSI and during his stay as a guest researcher at the GroupLens project at the University on Minnesota, Baudisch worked on user interfaces for information filtering systems. He holds a PhD in Computer Science from Darmstadt University of Technology, Germany.
http://www.patrickbaudisch.com/biography/index.html