I have pinned this because for what it is advertising it is an amazing idea. It is advertising nail biting treatment on the bag, and as you can see the hand hole is of someones mouth. it looks as thought the persons hand is being bitten.
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.