You can already do this in real-time by visually observing the subtle movement variations just above a subject’s adam’s apple while simultaneously listening for minute pauses in their breathing pattern which indicate unconscious/unobservable thought breaks. Most academic “mind-readers” are able to decipher anywhere between 5-28% of all conscious thought based on the subject’s willingness/body-fat percentage, but I’ve created a prototype auscultation device that increases my read to 12-35%. I’m only an amateur still in grad school but I’d be quite happy to do an AmA.