President Barack Obama on Thursday shook hands and fist bumped with a paralyzed man who was using a mind-controlled robotic arm.

“Today he can move that arm just by thinking about it. He can once again feel the touch of another person,” said Obama, speaking to an audience in Pittsburgh. “Researchers will tell you there’s a long way to go. He can feel pressure with precision. That’s what science does. That’s what American innovation can do. Imagine what breakthroughs are around the corner.”

The president spoke about meeting Nathan Copeland during the White House Frontiers Conference.

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