Modern interactive services such as information and e-commerce services are becoming increasingly more flexible in the types of user interfaces they support. These interfaces incorporate automatic speech recognition and natural language understanding, and include graphical user interfaces on the desktop and web-based interfaces using applets and HTML forms. To what extent can the user interface...

The research of new human-computer interfaces has become a growing field in computer science, which aims to attain the development of more natural, intuitive, unobtrusive and efficient interfaces. This objective has come up with the concept of Perceptual User Interfaces (PUIs) that are turning out to be very popular as they seek to make the user interface more natural and compelling by taking a...

As user demand and cost benefits of natural user interface technologies are hastening their wide adoption, computing devices come equipped with these natural interaction interfaces are becoming ubiquitous. Consequently, authentication mechanisms on them are becoming an essential security component to allow wider range of applications to be deployed on the devices including privacy and security ...

We introduce our view of the relation between symbolic gestures and manipulations in multi-touch Natural User Interfaces (NUI). We identify manipulations not gestures as the key to truly natural interfaces. Therefore we suggest that future NUI research should be more focused on designing visual workspaces and model-world interfaces that are especially appropriate for multi-touch manipulations.

Personalization of user interfaces for browsing content is a key concept to ensure content accessibility. This personalization is especially needed for people with disabilities (e.g,. visually impaired) and/or for highly mobile individuals (driving, off-screen environments) and/or for people with limited devices (PDAs, mobile phones, etc.). In this direction, we introduce mechanisms, based on a...

Designers are often challenged to break free from the traditional interaction design for mouse and keyboard to create new and compelling user experiences for natural user interfaces. We conducted several workshops to inspire and provoke critical reflection on interaction and interface design for natural user interfaces based on physical substances that are used in everyday life [2, 3, 5]. The m...