Abstract: An optical disc having a center, an outer periphery and a metal layer between the center and the outer periphery. A tag comprising a radio frequency transponder is located in a region adjacent the outer periphery. This arrangement facilitates reading the transponder with an external reader when a plurality of discs are stacked one on top of the other.
Type:
Application
Filed:
August 26, 2005
Publication date:
February 26, 2009
Applicant:
IP AND INNOVATION COMPANY HOLDINGS (PTY) LIMITED