Is this even remotely feasible though, technologically? I briefly tried using the Muse headband, a cheap (~$200) brain EEG device that connects to your phone via Bluetooth, and it was pretty much a disaster. It had five metal contacts across the forehead, but could never keep all five correctly working, so it was constantly showing errors in the app about insufficient data. Given that we still haven't figured out how…
Muse is way more ambitious in what they’re trying to do and also have way less control over manufacturing detail and efficiency. It’s a totally different thing.