Health Sensors
Apple has an active interest in healthcare, if its wellness endeavors and Apple Watch updates are any indication. And while there isn’t any firm reports suggesting that Apple could add AirPods to its health-centered lineup, there are quite a few rumors indicating that this could be the case for AirPods 3.
Throughout 2017, Apple filed a slew of patents related to biometric and health sensors that could be embedded in an earbud. That includes sensors that could read your heart rate, as well as the ambient temperature around you and even the levels of certain types of chemicals in the surrounding air.