It’s 51% paper, holds 25GB of data and it’s very, very clever. Sony and the Toppan Printing Company have developed a 1.1mm Blu-ray optical disk with some very exciting applications.
It’s cheap, allows very high quality printing on the label side, is more rigid than a standard disk and more secure, because you can just cut it up with a pair of scissors.
The disk is more rigid because the data layer allows for a thicker substrate, and so is more resistant to warping.