Anyone for bridge?

GGM's home have installed an inter-active projector that projects various images onto the table top and reacts to hand movements on the table.  In this case a ball is bouncing back and forth on the table in response to nudges by hand.  A projected aquarium causes fish to swim away leaving a  trail of bubbles if 'tickled' and  swathes of autumn leaves can be rustled around to reveal ladybirds who promptly fly to new cover.