Do you remember, How Stephen Hawking communicated? I'm talking about 2015. The program run by Intel that allowed Hawking to select characters and words is called ACAT or assistive context-aware toolkit. An infrared switch that was attached to Hawking's glasses would detect the movement he made with his cheek that would stop the cursor or mouse from moving on the screen. (Reference)

After 6 years, now in 2021, Artificial intelligence went to the insane level. It can drive a car. Can understand emotions. And also can understand what your brain is cooking.

The AI works basically how you train it. Suppose AI is trained on the word "Mobile Phone". It's like when you think about Mobile Phone, your brain generates some neuromagnetic signal. It's not the same signal that everyone processed. But when people think about Mobile Phones there is some common signal that the brain generates. The AI can read the neuromagnetic stimulation and can translate it into words.

But capturing the signal, the system must need some types of equipment like NMR/MRI. The device we regularly use like smartphones and laptops don't have that facility. So how can it capture that neuromagnetic stimulation? It maybe works here in a different way. A smartphone is capable of generating and receiving radio waves. So radio wave/electromagnetic wave spells the magic here.