“Likely several months or even years away,” after the shift to USB-C:

The company is working on a new hearing test feature that will play different tones and sounds to allow the AirPods to determine how well a person can hear. The idea is to help users screen for hearing issues, not unlike how the Apple Watch ECG app checks for heart problems. The hearing test could “Sherlock” – or make irrelevant – existing apps like Mimi. (Apple held a meeting with its developers a few years ago.)

Separately, Apple is exploring how it could better position AirPods as a hearing aid, a $10 billion-a-year market that’s ripe for reinvention.

Apple has already added hearing-aid-like features, such as Conversation Boost and Live Listen, but they don’t yet have regulatory approval. Last year, the US Food and Drug Administration eased hearing aid purchase rules, allowing for over-the-counter sales without an exam or prescription. That’s created more of an opening, and Apple has hired engineers from traditional hearing aid makers as part of this effort.

There’s also engineering work being done on adding sensors to the AirPods so they can determine body temperature via a wearer’s ear canal. That type of data is considered more accurate than wrist temperature, which is collected on the Apple Watch Series 8 and Ultra models while users sleep. Apple relies on that information for fertility tracking but wants to expand its use to determine if a person has, say, a cold or other illness.

Full article here.