Everyone loves to be comfortable, but what you consider to be a perfect temperature might be drastically different than the temperature preferred by a person sitting just a couple feet away. Whether you work in a large office, or even just live with one or more other people, you know that battles over thermostat settings can be, well, heated.

Researchers from the University of California San Diego have developed a wearable that could completely change the way we think of heating and cooling our bodies. It’s a patch that is designed to be worn around the arm, and it actively modifies skin temperature, making the wearer feel warmer or cooler depending on their own personal preference.

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