A smart earring prototype called the “Thermal Earring” was introduced recently as a wireless wearable capable of monitoring the temperature of a user’s earlobe. In a small study of six people, the smart accessory outperformed a smartwatch at sensing skin temperature during periods of rest. Researchers said it also showed promise for monitoring signs of stress, eating, exercise and ovulation.
The Thermal Earring, which is about the size and weight of a small paperclip, attaches one sensor to the ear with a magnetic clip. Another sensor hangs about an inch below to estimate room temperature. The sensors can be personalized with fashion designs made of resin or with a gemstone without negatively affecting accuracy.