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I would also be interested in a citation, but it does make sense; if tracking dots is well known (which they are), and it was easy to circumvent by just removing yellow toner, anyone somewhat technically adept would just remove their toner before printing their illegal documents.

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This makes less sense than you might think because the original motivation from the government side was tracing counterfeit currency, not tracking all documents. Printing convincing counterfeit currency without yellow toner would be a challenge!

However, the governments did not succeed in limiting their technology to use in counterfeiting investigations, and may not even have attempted to do so.

If that's true that just makes me angrier because a far better solution would be to improve the currency, like Canada and many other countries did long ago.

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