Today people are developing technology to interface directly with the brain. One of the more safe ones (besides just a keyboard and mouse) is EEG (ElectroEncephaloGram). With EEG electrical probes are attached to the head on the surface. These connections are wired to a pre-amplifier or instrument amplifier, digitized and feed into a PC or Mac computer for analysis.
Several very low frequency brain waves have been discovered. The waves are actually radio waves (electro-magnetic) but the magnetic component is so small that just the electrical component is picked up.
Here is a few great articles:
Brain Computer Interfaces
Interface Tech for the Brain
Note the various parts of the human brain that is active during different thought processes in this video.
Feelings speak loader than thoughts and reasonings….so its not the product that is better, but the one that feels the best. Even comparison charts help in sales, but understand then the user pulls out the credit card for a purchase, it was most of the time where the emotions have dictated.
Just think of the complexity of the DNA that describes this flower to the nano-engine of biological systems.
Look at this Ham Radio: Gqrx is a software defined radio receiver powered by the GNU Radio SDR framework and the Qt graphical toolkit.
Look at this Ham Radio: receiver.
Consider a SDR (software designed radio) on this site, let your PC control the Radio parameters.
Consider GNU Radio as a great software option for Ham Radio.
Consider Amateur Radio Astronomy, also this site, and this NASA site.
What Made These Amazing Companies So Disruptive? They All Built Platforms
Consider the companies: Google, Amazon, Uber, Airbnb, and eBay—is that they aren’t focused on selling products, they are building platforms. Also: Walmart, Microsoft, Nike, John Deere, and GE.