Flexplay Technologies, Inc.

Coopervision International Holding Company, LP

Coopervision International Limited

Christopher J Marmo

James R Valentine

Eric J Carlson

Daniel J Ehntholt

John R Powell

Irwin C Winkler

Philip E Rollhaus

Barbara Rollhaus

An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc, after some period of time. Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.

Machine-readable optical disc with reading-inhibit agent

Growing community of inventors

Danville, CA, United States of America

Christopher J Marmo