Fwiw, saw this idea used a couple of times fictionally in the original Star Trek (1960s).<br><br>While two of the actors did dialog, the indicator light in the background window showed each floor being passed would also go sideways showing each exit being passed on that level.<br><br>Nice to know it's actually going to be a thing now.,(reply>), Star Treck is mostly science fiction (now partially reallity) rather than fiction.