Naqi Neural Earbuds
"We build the only neural earbuds on planet Earth that can serve as a safe, non-invasive alternative to brain implants. [They offer] the ability to have a full command of control over Windows and Mac computers, including typing, browsing, shopping and playing contemporary video games," Segal explains.
If that was true, we would not be reading that on TechRadar I believe
NeurGear ZenBud
Instead of sensing nerves and translating those signals to control a device like the Neural Earbuds above, NeurGear's ZenBud headset uses ultrasonic sound waves to relax you. The tech works by stimulating what's called the Vagus nerve, which is responsible for various bodily functions such as digestion, heart rate and breathing.
Yeah, this is more sensible, more like the usual BS we are used to in audio world.
MyWaves Technologies Pebble and
Earable Neuroscience Frenz Brainband seems to be monitoring brain activity by measuring electromagnetic waves emitted by the brain, and curating music to suit that, which sounds more plausible than the other two I think.