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A man who cannot his arms or hands has used his thoughts to on a computer screen. The man has been from the neck down for almost a decade. Scientists from Stanford University in the USA two tiny sensors into the man's brain. The scientists gave this method two names - "brain-to-text" and "mindwriting". The man wants to anonymous, so scientists have him T5. He became paralyzed after a spinal cord injury ten years ago. The implants have T5 to use his mind to write. He can write 90 characters (about 18 words) per minute. This five words slower than the average person a text message on a smartphone.

The mindwriting system very simple, but it a lot of advanced technology. Scientists asked T5 to imagine holding a pen and then writing a sentence on a paper. The sensors in T5's brain the activity in his brain as he imagined writing. A computer this activity into text on a screen. The scientists used a special algorithm to this. Professor Jaimie Henderson, a Stanford University researcher, this research could help millions of paralyzed people, and those who have the ability to speak, to write again. He said: "The goal is to their ability to by text." This technology may one day help anyone to at the speed of thought.