The recent development of co-operative systems in CSCW has also seen a growing application of concepts
drawn from spatial arrangements.These include the development of groupkit to form teamrooms [Roseman, 1996],the emergence of the worlds system [Fitzpatrick, 1996] and the use of a notion of places to support infrastructure
[Patterson, 1996]. This exploitation of virtual spaces is most notable in the development of shared social worlds
exsiting soleley withi the machine [Benford, 1995]. However, the use of space and virtual spaces has not been
isolated to an existance solely within the computer and a number of researcher have considered how space and location can be considered in both virtually and physically within the development of applications.This is most
evident in the augmenting of existing physical spaces to form digital spaces populated by electronically sensitive
physical artefacts (or tangible bits)[Ishii, 1997] that are sensitive to their position within both physical and virtual
space.