Who needs words when you have wireless signals? Researchers at the Massachusetts Institute of Technology say they have developed a device that can detect your mood without you having to speak a word.

EQ-Radio monitors how wireless signals reflect off a person’s body and uses that data to measure human behavior and moods. The researchers behind the device say it’s 87% accurate in telling if someone is excited, happy, angry or sad, which is about as accurate as an electrocardiogram monitor, which uses a sensor on the body, in measuring heartbeats.

The team will present the EQ-Radio next month at a mobile computing conference and figure from there it can be used for many purposes, including gauging audience reactions to movies and different products, in homes to adjust temperature based on mood, or even in health care.

Source: Associated Press