Reading people's Mind, implanting thoughts, predicting behavior and hacking into the subconscious may sound like science fiction. But one man does it, world renowned mentalist Sir Keith Barry.
He reprogram people’s minds and read peoples intimate thoughts using advanced psychological principles.
Keith Barry is a brain hacker. It's the term people have coined especially for him and it sounds dangerous.
He doesn't read minds and he doesn't believe in psychics, but what he does believe is human observation, deduction, neuro-linguistics, probing, hypnosis and magic can make people think he is hacking into their brains. And on Wednesday, he tried it on me.
"Really, there are no tricks to what I do - there used to be, years ago I started as a magician, and I do still use some magic techniques - but I'm reading you, your eye movements, everything about you to find out what you are thinking at any moment in time."
The Irishman started as a child, wandering around the playground trying to guess what people were thinking, before moving onto bigger and more sophisticated routines.
"You start with simple shapes, numbers and colours and you would fail 50 per cent of the time, then you would get better and better and better through practice.
"What I do is a learnt skill, but I've done it through 20 years of practise, 10, 20 hours a day sometimes. It does take that kind of effort."
By the age of 20, Barry was studying psychology and hypnosis and went on to win almost every magic award going. But it was the head that had his heart.
"I'm fascinated by the human brain, especially the subconscious mind.
"Once you understand the subconscious and how it functions and how it works, then you can start to manipulate it and hack into it."
He's studied and created his own sleeper agent to prove the US government ran the secret assassin programme, and he's used his skills on some of the world's most famous faces, like Ellen De Generes, Elijah Wood and Rachel Hunter.