> Even better, AR/VR headsets with electrodes can not only record your brain activity, but they can also stimulate it with the screens and know exactly how you react to this or that image, this or that sound. What is your reaction to this politician? How you feel when you see this advertisement for this new car? What kind of man/woman you prefer (which can then be used to make tailored ads) and so on... In neurosciences, this practice is known as probing: analysing how your brain reacts to controlled stimuli.
The best part of neurotechnology for AR/VR is that it'll let "startups" spout utter bullshit vapor for another decade by promising the technology is "under development" and "coming in a couple years", since the headset kind has gotten too actually-available for that routine to keep working.