Tags: covert hidden message polarized light security
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Inspired by movies like "They Live", "The Spiderwick Chronicles" and countless spy films, I wanted to create a means of displaying information in public, that only a select few could see. To the unaided eye, the mosaic of tinted film squares seems uniform and holds no particular meaning. But when viewed though a polarized filer (or a pair of polarized sunglasses), the concealed message becomes clear.
Web site: http://jetson.googlepages.com/covertpublicmessages
Robert Hermes
Father, Inventor, Engineer, First Responder, Fixer of things, Woodworker, blood donor, KG6VOT
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