Thomas Davie:
The concept is simple but formidably clever: a tiny camera gathers light and shape data, before sending it to a computer that processes it and uses hundreds of tiny electric motors to shift the wood blocks into the image in front of the device. Subtle gradations of shade are achieved by both the natural grain of the wood and the angle at which they are displayed, casting shadow if necessary.
Doesn’t look like a mirror, nor would it be useful for anything other than art, but it is very neat.
[via Hacker News]