Dynamic knobs: shape change as a means of interaction on a mobile phone

In this paper, we introduce the change of a mobile phone's hardware shape as a means of tactile interaction. The alteration of shape is implemented in a hardware prototype using a dynamic knob as an interaction device for the user. The knob alters the phone's shape according to different events and states, like incoming calls, new voice mail, or missed calls. Therefore, the user can explore the phone's status by touching it ? ambiently, even through the pocket. Initial user testing showed that this form of tactile interaction was easy to understand and handy to interact with, also for unexperienced users. Keywords Force feedback, mobile phone, notification systems, shape change, tangible interfaces ACM Classification Keywords H5.2 [Information interfaces and presentation]: User Interfaces - Input devices and strategies

• Type: Conference
• Year: 2008
• Where: CHI
• Authors: André Knörig, Fabian Hemmert, Gesche Joost, Reto Wettach
• Keywords: CHI 2008, Human Computer Interaction, Interfaces Acm Classification, Mobile Phone, Tactile Interaction