Collaboration. Augmented reality. Having a big monitor when you need it and a more apparently spacious work environment when you don't. What it's useful for rea

Collaboration. Augmented reality. Having a big monitor when you need it and a more apparently spacious work environment when you don't. What it's useful for really depends on the specs of the screen. It can be faked to some degree with a webcam, but it's usually not worth the trouble. Some augmented reality applications use a "virtual lens" or "virtual mirror" through this sort of trick. (The mirror version, not so see-through.)