MindPlay is only as good as the casino personnel operating it
As someone else recently posted, MindPlay appeals to two things casinos know well: Paranoia and Greed. It is primarily a device to reduce pit staff and reduce comps. If you use common sense, MindPlay is rendered useless for fending off skilled players.
It reads your mind. If the supervisor does not like you and it tells him you cheated on your wife two years ago, a brain scan with translation is sent immediately to your wife. Looked at some porn in the office, cheated on your taxes or anything like this, you are screwed within 30 seconds of placing your backside on that chair.