[11] investigates face-to-face or co-present group collaborations and formulated the model known as Single Display
Groupware (SDG). This model is defined as a single user
interface that allows simultaneous collaboration by multiple
users via numerous input devices. There have been several attempts to improve the collaborative process by incorporating multiple input devices on the same display. [2],
proposes a system to improve the often solitary task of websearch via a co-located collaboration group.