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Kristie Macrakis

The World

The history of invisible ink is finally out in the open

Arts, Culture & Media

Author Kristie Macrakis got interested in invisible ink a few years ago while researching the Stasi, East Germany’s secret police. Now she’s written a history of steganography, or “hidden writing.”

The World

The history of invisible ink is finally out in the open

Arts, Culture & Media
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