The Department of Optics at the University of Granada has recently
a new technique that provides the means to identify the difference between a bootlegged CD and one made industrially (other than checking if the top has “Workout Mix” written in Sharpie).
At a base level, they’re simply checking out the light diffraction from the surface of the CD. Ideally, it’ll be noticeably different between a CD made at home and made at the factory. In fact they’re so confident with the process, they’ve filed for a patent.
Sadly, they’re a bit late. For many of us, the CD boat has sailed and this technology is generations behind. But, there might be some of you out there that still prefer your music in disc form, and to that I say kudos.
Image Credit: auntnanny on Flickr