Interactivity at its best.
Equipped with ultrasonic sensors, digital screens at a subway platform in Stockholm, Sweden created a hair-raising experience that took commuters by surprise. These sensors detect the arrival of trains and when it arrive, something magical happens.
When there is no train detected, the digital screen looked like a static ambient ad, with a visual of a girl with gorgeous hair. The magic that surprised most commuters is when the train arrives, her locks get blown and she starts to move, blink and puts her hair back in place.
Very, very clever.