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My boss actually switched to wearing them all day dogfooding the thing (I work in the same lab: also as a disclosure). For a long time a downside was the audio, but the new version has a really nice driver and amazing DSP optimizations. The colleagues also conducted wearability studies and I also can confirm (having participated) that they are really walearable. Don't have the numbers but they are not really heavier than other in ears from my impression.

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I see "Ear Canal Pressure Sensor" is listed on the website.

I know that NASA was doing some research on using the tympanic membrane to measure intercranial pressure. Ask around, please, and find out if anyone has considered that application. We really do need a better way to detect cerebrospinal leak (CSF Leaks). A CSF Leak was a significant contribution to my late wife's death.

I will forward that to my colleagues, who are looking constantly for new applications (particularly in health tech). The sensor exists since Toby's paper on measuring tensor timpani muscle activity [0] .

[0] https://dl.acm.org/doi/10.1145/3411764.3445205

Thank you, from all those with CSF Leaks and intercranial pressure issues, being high or low. Let me know if I can help.

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