This MIT device can tell if you're happy, sad or angry using wireless signals

Photographic cues have helped systems like Microsoft's Emotion API detect human feelings with decent accuracy, but a new research project from MIT's Computers Science and Artificial Intelligence lab can interpret emotions with a greater degree of accuracy, using only wireless radio signals. Researchers at CSAIL have created a device they call the EQ-Radio, which can pick up emotions including excitement, sadness, anger and happiness with around 87 percent accuracy in tests thus far. The research is significant because it doesn't actually require any on-body sensors, either, even though it's detecting subtle cues from the subject including breathing patterns and heart rhythm. And since it requires nothing worn by the user, and avoids the accuracy pitfalls of something like camera-based facial recognition software, its creators believe it could be the ideal tech for companies looking to build some kind of emotional intelligence into their products. MIT professor Dina Katabi led the development of the EQ-Radio, and suggests that it could be used in varying ways across the entertainment, consumer advertising and healthcare verticals. You could, for instance, use it in smart TVs to more accurately gauge viewer response to ads and programming; or you could build it into a smart home hub to trigger automated actions with connected devices like stereos and lighting, adjusting the mood of you home to counter or augment your emotions.