Over-the-ear Biosensing Wearables

The wearable healthcare market is experiencing significant growth in recent years, reaching over 121 billion globally in 2021 and is predicted to surpass 390 billion by 2030 [1]. With more than 500 million units shipped annually, ear-worn wearables, such as headphones, earphones, etc., hold an enormous potential to be the platforms of innovations. Furthermore, they are already socially accepted as part of our daily life. As a result, introducing more sensing modalities into these wearables is less likely to obstruct the user's everyday activities, resulting in easy adoption for newly developed research and technology in this field [2].