Iv never seen anyone mention it on any cruise message boards, but some ships have these red kiosks, Ecstasy had them, but Elation did not have them, so its ship specific.
I was waiting for the excursion desk to open and someone said you know you can just book it at this kiosk and its a touch screen, no need to wait for at the excursion desk if you know what you want to book and not there to ask questions.
There was a little red thing at both ends of the desk that I always ignored and never looked closely at.