Collaboration technology and multi-user interfaces

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Interaction techniques for shared displays in collocated environments present a number of challenges. The proposed research examines the affordances of tabletop, large wall-mounted, and hand-held displays to determine how each best supports specific tasks during face-to-face collaboration, and how each can augment the other. Investigations of novel multi-touch interaction techniques and techniques for use at a distance from the display are being conducted, especially in collaborative environments where mutual awareness of each other's workflow must be traded off against interference and distraction by one user's interaction with another's workflow. Privacy and security issues arise in ad hoc collaborations, where mutual trust cannot be assumed. In these situations the usability of privacy features becomes an important concern that is being studied.