ABSTRACT
Traditional HCI is restricted to a one-one mode where only one user interacts with one device, such as a personal computer, through a few communication channels, such as a mouse and a keyboard. Research on HCI has promoted new technologies and improvements in user experience. However, in past decades, the rise of mobile devices (e.g., PDA, smartphone, tablet computer, etc.) has impacted the monotonous interaction pattern between human and personal computers, and the development in computer vision and sound processing has enriched communication channels to digital media (e.g., speech, gesture, touch, etc.). Trends such as ubiquitous computing [1] gradually have made traditional HCI technology appear insufficient and inconvenient, while collaborative and distributed HCI technologies using multiple devices and interaction modalities are gaining more and more attention.
