Visiting student Nan Zhao works in the test setup at the Media Lab under four LED fixtures controlled by the prototype adaptive system (left). The currently used device that incorporates sensors and controls is not much bigger than a credit card (right). Photo courtesy of Matt Aldrich

Visiting student Nan Zhao works in the test setup at the Media Lab under four LED fixtures controlled by the prototype adaptive system (left). The currently used device that incorporates sensors and controls is not much bigger than a credit card (right). Photo courtesy of Matt Aldrich