Abstract
An overview of subjectively selected recent topics and research trends in the area of modern telepresence and teleaction is given. Multi-modal telepresence systems are to enable human operators to become present and active in remote or inaccessible environments through a communication network and a suitable telerobotic system. The major challenges of such a multimodal telepresence system like stabilizing measures, and transparency, e.g. in the case of time-delay (latency) in the communication network, are discussed. A practical implementation of an integrated mobile and bimanual multi-user telepresence and teleaction system as well as some exemplary experiments are presented. Furthermore, it is discussed how the performance of telepresence systems can be improved by using psychophysical knowledge of human perception.