Tilt to Scroll: Evaluating a Motion Based Vibrotactile Mobile Interface

The increasing complexity and pervasiveness of handheld devices is demanding the development of interaction techniques explicitly tailored for mobile scenarios. This paper examines one such technique: the use of device orientation to navigate through one dimensional lists or menus. We describe a novel input mapping, directly relating list position to device orientation, and two studies quantifying user performance with this system. We believe vibrotactile feedback would be significant in movement-based mobile interfaces, and also examine its influence. Our results indicate that both our input mapping and the inclusion of vibrotactile feedback positively affect user performance and experience. We conclude by discussing the design implications of this work.