[shae]

I'd say this many sensors in a wireless package can do many things.

My first project would be exercise monitoring. You can measure heart rate, blood oxygen levels, and body temperature in one place.

I would then add something fun like comparing beats per minute of the music to heart rate.

I like the creators' suggestion of using the shape of the ear canal for authentication, I bet that's harder to steal off a video recording than fingerprints or a retinal pattern.

I'd also use this for voiceless speech, as the creators suggest.

I could think of more, but I won't be able to afford the dev kit, sadly.