In a country where work essentially dominates your life until retirement, Japan has created the Happiness Counter that promotes smiling and, according to trial, genuinely increases a person's happiness.
The Happiness Counter is a device that has an integrated smile recognition software that is able to detect whether someone is smiling or not. The sensor was attached to a fridge, which meant that the door could only be open if the person smiled. The shutter automatically sensed the smile and granted access.
In a trial run, the refrigerator proved that users who initially only smiled seemingly forcefully ended up with a more genuine happy smile. It encouraged a more uplifted mood in meetings and promoted better work ethic as well.