We present BaseLase, an interactive laser projected focus + context floor display. In order to provide a transportable system that works in areas where there are no ceilings, we provide an integrated unit (1.3m height) that stands on the floor. One unsolved challenge for laser projectors is to cover large projection areas while providing high resolution at the same time. Our focus + context laser projector solves this problem. BaseLase can cover a large context area in low resolution, while providing three movable high-resolution focus spots. We provide a convex mirror design that enables the laser to reach a large area (75m2) with low resolution while decreasing the beam divergence compared to spherical or parabolic mirrors. This hyperboloidal mirror shape approximately equalizes the point size on the floor independent from the projected location. We propose to add a number of planar mirrors on pan-tilt units to create dynamic zones of high resolution that can adjust to the user behavior. We provide example applications for BaseLase and report on user experience in preliminary trials.

We present Communiplay, a public display media space. People passing by see their own contour mirrored on a public display and can start to play with virtual objects. At the same time, they see others playing at remote displays within the same virtual space. We are interested whether people would use such a public display media space, and if so, how and why. We evaluate Communiplay in a field study in six connected locations and find a remote honey-pot effect, i.e. people interacting at one location attract people at other locations. The conversion rate (percentage of passers-by starting to interact) rose by +136% when people saw others playing at remote locations. We also provide the first quantification of the (local) honey-pot effect (in our case it raised the conversion rate by +604% when people saw others playing at the same location). We conclude that the integration of multiple public displays into a media space is a promising direction for public displays and can make them more attractive and valuable.