The money contains a pattern called the Eurion Constellation. Copiers recognize the patter and reject it. http://people.duke.edu/~ng46/collections/steg-eurion-constellation.htm …
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Yes, people will always find ways to kill one another. It’s a question of how difficult do we want to make 3D printing a gun to be. Easy enough that any 9 year old can do it, or difficult enough that it takes an advanced hacker?
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For now. Just wait until the government makes every 3D printer check in via Internet before printing.
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What fact did I get wrong? (That mattered to anything.)
8:12 AM - 21 Sep 2019
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