Telepresence-visual telecommunications into the next century

The authors describe a selection of telepresence systems and services that are currently being investigated and developed. Each can be fully realised with present day technology, and most can operate, albeit at a reduced service level, over the existing network. The authors draw attention to their potential and likely importance in future telecommunications. Topics covered include mobile telepresence; video walls; electronic whiteboards; instant facsimile; teleconferencing; hands in the screen interfaces; virtual reality; and 3D presentation