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Fighting Counterfeiters With Quantum Money

the_newsbeagle writes "This article discusses a proposal to create cash that can't be counterfeited by embedding quantum particles in banknotes. A counterfeiter trying to copy a real bill would have to precisely measure all the attributes of the embedded quantum particles — which is impossible under the tricky laws of quantum mechanics (PDF). MIT computer scientist Scott Aaronson, who famously offered a prize for anyone who could prove quantum computers are impossible, said, 'This is science fiction, but it’s science fiction that doesn’t violate any of the known laws of physics.'"

7 of 149 comments (clear)

  1. Re:Sooo by girlintraining · · Score: 5, Funny

    What happens when someone needs to look at the money to verify it's not counterfeit?

    They get a cat that might be alive.

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    #fuckbeta #iamslashdot #dicemustdie
  2. This sucks at the point-of-sale by Anonymous Coward · · Score: 5, Funny

    Where they have to use cats instead of the much simpler counterfeit checking pens.

    This will be a profit loser and allergic shoppers will suffer in particular.

    1. Re:This sucks at the point-of-sale by Anonymous Coward · · Score: 2, Funny

      Actually, they test for cocaine residue.

  3. Schrodinger's Money by Daetrin · · Score: 4, Funny

    You never know if you still have any left until you open your wallet to check.

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    This Space Intentionally Left Blank
    1. Re:Schrodinger's Money by plover · · Score: 4, Funny

      You never know if you still have any left until you open your wallet to check.

      I've got matrimonial money. I don't have to open my wallet to know my wife has it all.

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      John
  4. Re:Sooo by Anonymous Coward · · Score: 2, Funny

    I thought we settled it yesterday that you could just take the dead cat and turn it into a helicopter to raise money.

  5. let's be honest here... by Thud457 · · Score: 4, Funny

    Maybe I'll pay you Tuesday for a hamburger today.

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    the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff