—Location information should be verifiable in order to support new computing and information services. In this paper, we adapt the classical challenge-response method for authen...
Challenge questions are an increasingly important part of mainstream authentication solutions, yet there are few published studies concerning their usability or security. This pap...
—A fundamental goal of visualization is to produce images of data that support visual analysis, exploration, and discovery of novel insights. An important consideration during vi...
— Automatic Facial Expression Recognition and Analysis, in particular FACS Action Unit (AU) detection and discrete emotion detection, has been an active topic in computer science...
We investigate how fantasy, curiosity and challenge contribute to the user experience in multimodal dialogue computer games for preschool children. For this purpose, an on-line mu...