A team of scientists in Korea and the United States have invented a device that can control neural circuits using a tiny brain implant controlled by a smartphone.
https://www.sciencedaily.com/releases/2019/08/190805143525.htm
Why am I not surprised? Of course, not a danger to me; to understand my brain just read the ingredients on a jug of water. 😛
https://www.freerepublic.com/focus/news/3770628/posts?page=1
Scientists can now manipulate brain cells using smartphone
sciencedaily ^ | 8/5/2019
Which may be an amazing answer for paraplegics ...but not for me.