Off-computer screen displays include big urban screens on public squares, as well as medium size screens in shopping malls and lifts, as well as small screens that come with (mobile) gadgets or built-in consoles in buses or airplanes. To allow for intelligent interaction these screens may moreover be equiped with sensors and bluetooth. Interesting solutions are being developed, see online reference(s), that connect these screens with for example mobile gadgets, to support new patterns of shopping, tourism and game playing.