Transforms the conventional computer screen into a permeable boundary between real and virtual worlds and enables participants to project their presence from the real to the virtual and vice versa
- Understanding, Constructing Shared Spaces with Mixed-Reality Boundaries (Benford, Greenhalgh, Reynard, Brown & Koleva, ACM Transactions on Human Computer Interaction, TOCHI, Volume 5, Issue 3, 1998) introduces the concept of mixed reality boundaries as a generic approach to connecting real and virtual worlds and introduces a set of underlying boundary properties that enable us to define many different kinds of connection,
- Traversable Interfaces Between Real and Virtual Worlds (Koleva, Schnadelbach, Benford & Greenhalgh, Proceedings of CHI 2000) extends the idea of mixed reality boundaries with the further concept of traversable interfaces, permeable physical projection interfaces that are intended to support the illusion of participants stepping into and out of projected images of virtual worlds.
- Orchestrating a Mixed Reality Performance, (Koleva, Taylor, Benford, Fraser, Greenhalgh, Schnadelbach, vom Lehn, Heath, Row-Farr & Adams, Proceedings of CHI 2001) presents an ethnographic study of the performance Desert Rain (a collaboration with Blast Theory) that deployed an example traversable interface, a physically permeable projection screen called the rain curtain that was composed of a fine water spay through which performers could move, so that they appeared to physically emerge from and disappear into a virtual world.
- Moving Office: Inhabiting a Dynamic Building (Schnadelbach, Penn, Steadman,Steve Benford, Koleva & Rodden, Proceedings CSCW 2006) Presents a study of the use of mixed reality boundaries in an office environment to create a persistent and navigable media space in which video views of offices are embedded into a 3D virtual world which is in turn permanently projected back into the offices.