Hard to say what people may come up with.<p>the original Tango demo showed things like measuring distance between two points in free space simply by point the camera at each in turn, or taking a look at a life sized car by walking around it.<p>Potentially you could have an app that allowed you to see how a sofa would fit in a room before you buy it.<p>We are talking about a device that fits in your pocket and can be away of where it is in relation to everything else in a room.<p>I think it is one of those things that needs to be out there for a while for people to play with before we can say if it has any potential or not.