Excellent article on how counterfeit detector pens work.
The pens detect the starch content in money. Regular paper has starch, currency paper doesn't.
Magician and skeptic James Randi uses an ironing product, spray starch, that makes genuine bills appear counterfeit. Then he returns the starched bills to the bank. Eventually someone will attempt to pass the genuine but starched bill, leading to police, siezed money, etc.
Please Help Save Roman Imperial Coin Collecting (and Express Concerns about
Current or Possible Restrictions on Other Coins from Chile, Italy, Morocco,
and Vietnam)
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The State Department has announced that Italy has requested a renewal of
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2 weeks ago
1 comment:
The amazing randi sounds like an amazing jerk.
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