Talking paper

Scientists have created a touch-responsive, vocalizing paper.

"The key to the billboard's capabilities is a layer of digital paper that is embedded with electronics.

This is printed with conductive inks, which, when applied with pressure, relay information to a micro-computer that contains recorded audio files. Sound then streams out from printed speakers, which are formed from more layers of conductive inks that sit over an empty cavity to form a diaphragm."

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