46

Visual Cryptography(upload.wikimedia.org)

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Littleleeroy@lemmy.world
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When I was a kid (in the 2000s) I had a subscription to the James Bond magazine. It had lots of cool spy things including this. I had 2 different plastic cipher keys that you’d move over the “static” image and it would reveal secret info.

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gibmiser@lemmy.world
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D R I N K M O R E …

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