A real life Eyedropper tool! This is awesome. A pen with a little censor that scans the color of the object you point it at, then you can write in ink that exact color, it's like the eyedropper tool in photoshop outside of the computer.
This is cool, the escalator has been turned to look like an iPhone screen with a whole range of apps. This is advertising apples endless apps. It would be hard to miss this whilst you are travelling up the escalator.