Researchers from the MIT Media Lab have developed a 3D camera based on time-of-flight technology which the team claims can operate at the speed of light, as well as generate 3D models of translucent or near-transparent objects. The camera, which the team has dubbed the "nano-camera," costs only $500 and works similar to the newly-released second-generation Microsoft Kinect device, in that the location of objects is calculated according to the time it takes a light signal to reflect off a surface and return to the sensor.