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December 24, 2015 05:40 am -05

EPFL's printing technique hides one image behind the other

Remember those holographic cards that give off different colors when you tilt them a certain way? Well, in the video below the fold, the École Polytechnique Fédérale de Lausanne demos metallic cards similar to those, except they'...

Original Link: http://www.engadget.com/2015/12/24/epfl-printing-technique/

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Engadget

Engadget is a web magazine with obsessive daily coverage of everything new in gadgets and consumer electronics. Engadget was launched in March of 2004 in partnership with the Weblogs, Inc. Network (WI

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