Jan Gugenheimer

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We present SwiVRChair, a motorized swivel chair to nudge users' orientation in 360 degree storytelling scenarios. Since rotating a scene in virtual reality (VR) leads to simulator sickness, storytellers currently have no way of controlling users' attention. SwiVRChair allows creators of 360 degree VR movie content to be able to rotate or block users'(More)
This paper presents Glass Unlock, a novel concept using smart glasses for smartphone unlocking, which is theoretically secure against smudge attacks, shoulder-surfing, and camera attacks. By introducing an additional temporary secret like the layout of digits that is only shown on the private near-eye display, attackers cannot make sense of the observed(More)
Learning to play the piano is a prolonged challenge for novices. It requires them to learn sheet music notation and its mapping to respective piano keys, together with articulation details. Smooth playing further requires correct finger postures. The result is a slow learning progress, often causing frustration and strain. To overcome these issues, we(More)
This article deals with a novel multi-screen interactive TV setup (smarTVision) and its enhancement through Companion-Technology. Due to their flexibility and the variety of interaction options, such multi-screen scenarios are hardly intuitive for the user. While research known so far focuses on technology and features, the user itself is often not(More)
P.I.A.N.O. aims to support learning to play piano with a steep learning curve. In order to achieve this, traditional, hard-to-learn music notation is substituted for an alternative representation of a composition, which is projected directly onto the piano. Furthermore, we propose three different learning modes which support the natural learning process,(More)
Previous research on projector-camera systems has focused for a long time on interaction inside a lab environment. Currently they are no insight on how people would interact and use such a device in their everyday lives. We conducted an in-situ user study by visiting 22 households and exploring specific use cases and ideas of portable projector-camera(More)
We present GyroVR, head worn flywheels designed to render inertia in Virtual Reality (VR. Motions such as flying, diving or floating in outer space generate kinesthetic forces onto our body which impede movement and are currently not represented in VR. We simulate those kinesthetic forces by attaching flywheels to the users head, leveraging the gyroscopic(More)
In this paper we present ColorSnakes, a PIN-based authentication mechanism for smartphones which uses fake paths on a grid of numbers to disguise user input. In a lab study (n=24),we evaluated variations of ColorSnakes in terms of usability and security. In comparison to direct input, indirect input significantly reduced the risk of shoulder surfing (10.5%)(More)
We present <i>FaceTouch</i>, a novel interaction concept for mobile Virtual Reality (VR) head-mounted displays (HMDs) that leverages the backside as a touch-sensitive surface. With <i>FaceTouch</i>, the user can point at and select virtual content inside their field-of-view by touching the corresponding location at the backside of the HMD utilizing their(More)
Virtual reality (VR) head-mounted displays (HMD) allow for a highly immersive experience and are currently becoming part of the living room entertainment. Current VR systems focus mainly on increasing the immersion and enjoyment for the user wearing the HMD (HMD user), resulting in all the bystanders (Non-HMD users) being excluded from the experience. We(More)