In this, the stream of video and audio data is recorded as a series of minuscule spots on the disc's surface that have been gently fried by a laser beam and turned from their normal crystalline condition to an amorphous state that has different reflective properties.
But given that tablets are about touchscreens, it has long been mystifying that the video spots nearly exclusively highlight the fact that Surface can be used with keyboards.
At the heart of the technology is a micro-array consisting of thousands of microscopic spots of different sections of DNA deposited on a glass or silicon surface.