Neil Harbisson is a cyborg. The Northern Ireland-born artist suffers from achromatopsia, a rare sensory disorder. Since his birth, he's been able to see the world only in black, white and shades of gray. But thanks to an electronic sensor on his head, he's found a way to perceive colors. Because he's wearing the device in his passport picture, Neil Harbisson is considered to be the first officially-recognized cyborg.