Hitachi Unlocks The Key to Happiness — blogs.wsj.com

If you’re happy and you know it…Don’t bother doing anything because Hitachi Ltd. is already aware of how you feel. The Japanese multinational conglomerate announced Monday it has developed wearable technology that can wirelessly measure whether a group of people is happy or not. While the formula for happiness–or at least how it’s gauged–remains a trade secret, Hitachi says the technology works by having users wear a card-size device equipped with an acceleration sensor that monitors a group’s behavior and sends data to cloud-based servers.

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