Since 2003, image editors such as Adobe Photoshop CS or PaintShop Pro 8 refuse to print banknotes. According to Wired.com, the banknote detection code in these applications, called the Counterfeit Deterrence System (CDS), was designed by the Central Bank Counterfeit Deterrence Group and supplied to companies such as Adobe as a binary module.
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"if you use Photoshop then a binary blob is present on your computer authored by an international group of central banks that not even Adobe has the source code to" sounds like a conspiracy but its absolutely true
@760ceb3b9c0ba4872cadf3ce35a7a4 there is also something in printer or scanner to prevent counterfeit!
https://en.wikipedia.org/wiki/EURion_constellation
EURion constellation - Wikipedia

By definition, it is a conspiracy. Not exactly malicious, but it still is one.

@orpach.neocities.org To be a conspiracy it needs to be secret. It's not a secret that for decades photocopiers have refused to copy bank notes.

This Photoshop limitation isn't something I was aware of before, but neither does it surprise me in the slightest.

@760ceb3b9c0ba4872cadf3ce35a7a4 Good job I was using Paint Shop Pro in 1999.