Prescription hearing aids are expensive, and they aren't just amps that make sounds "louder". An open source hearing aid project, if it could dramatically reduce the price, could be a huge benefit to a lot of people.
For example, AirPod Pros have a motion sensor. I'd love to build an app that uses this to fuse with video for a bouldering analysis thing I work on in my spare time.
https://developer.apple.com/documentation/coremotion/cmheadp...
Cool to see them pop up here, as my colleague Tobi built them here at our lab and is now pushing a spin off.
Actually to get an impression what is possible with ear sensing I am still fascinated by this application Tobi did before building openearable, which uses in ear muscle contraction for doing interaction (next song, etc):