Mind Reader's Limitations and Possibilities

Mind Reader, which is a Prolog algorithm on a classical computer that detects brainwaves using meditation, cannot read minds accurately.  At least, one cannot control its output.  We could just leave it there, assuming it was useless, never to be touched again.  However, when using mind reader, I noticed that sometimes it could at least detect that I had a thought.  (The "lifting a finger" idea suggests severely disabled people could play Flappy Bird or Mario.)  It could detect types of thoughts through the user timing their response to answer "yes" to hot/cold questions, such as do you want to go east, etc.
It could detect types of thoughts, e.g. breasonings or meditation.  For example, well, it suggested being able to be used to count breasonings, like a teacher's automated gradebook, however this may need refining.  The idea of any property at any time and place (I mean, related to a person) being detectable has pangs of privacy worries, but perhaps just counting breasonings would be useful, and harmless.  Even though the seemingly simple breasoning seems elusive, meditation itself can be detected using computer.  For example, the previous version of my Mind Reading Music Composer crashed only when the user stopped continuously meditating (on a mantra).  And that was with no gaps, only a background "ah" (?!) while taking a breath.  Perhaps, like thoughts, types of breasonings could be detected using a kind of timed questionnaire.  E.g. have you been mind reading, time travelling (more like the spiritual, in fact time travelling mind reading, you or someone else as a bot and even teleporting to everyone else but the self).  Levels, numbers of breasonings could be detected when someone ran a computer program that outputted them, by comparing them with levels - i.e. 100-1000, then refining.