NYC Subways Use Apple’s Keynote Software

Has anyone else noticed that the displays on the new NYC subways seem to use Apple’s Keynote presentation software? If you’ve ever used Keynote, pay attention to the transitions and you’ll recognize all your favorites – Cube, Dissolve, Pop – they’re all there!

Does anyone know if they actually have a little Mac running the show inside every subway, or if it’s just a video file looping?