Its an official patent. They doing it
Discussion
I wonder if it works... I've never heard of it being done through the ears. I know you can send signals to manipulate the brain activity that way... but idk about reading it.
It's pretty interesting.
Have you read about those patents from the earlier 2000's where this guy was making a device that was the size of a credit card and it had the ability to affect your emotions through frequency?
They stopped the patents in 2010.