Recent in-vehicle information systems are increasingly equipped with touch screens. While classic (i.e. point-based) direct touch interaction has known benefits in non-automotive environments, it primarily relies on visual attention, which makes it a bad candidate for interaction in the car, where visual attention should be on the road. We have designed an interaction scheme for IVIS based on touch gestures and pie menus and implemented several versions of it featuring visual cues as improvements to the original idea. In an extensive user study with a primary driving task, we were able to show that our interaction scheme is significantly faster than classic touch interaction and that it demands shorter gesture using visual cues.

Automated teller machine (ATM) frauds are increasing drastically these days. When analyzing the most common attacks and the reasons for successful frauds, it becomes apparent that the main problem lies in the PIN based authentication which in itself does not provide any security features (besides the use of asterisks). That is, security is solely based on a user's behavior. Indirect input is one way to solve this problem. This mostly comes at the costs of adding overhead to the input process. We present ColorPIN, an authentication mechanism that uses indirect input to provide security enhanced PIN entry. At the same time, ColorPIN remains a one-to-one relationship between the length of the PIN and the required number of clicks. A user study showed that ColorPIN is significantly more secure than standard PIN entry while enabling good authentication speed in comparison with related systems.