4 ms·

I wonder how research gets around it. Most printer/copiers have detection software in them to determine if someone is trying to print out money and then cancels

I wonder how research gets around it. Most printer/copiers have detection software in them to determine if someone is trying to print out money and then cancels the print job. I can imagine that those kinds of folks would need counterfeits to test against. Also, there is a good case for educational purposes and museum collections, in addition to things just like stamp collecting.

_underfl0w_ 8y ago
> Most printers/copiers have detection software Do you have a source for this? I've never heard of it but would be really interested in looking at, say, a disassembly of applicable firmware.
- hexadec 8y ago
  The Eurion Constellation is how this is usually done. Most US bills above a certain value and most larger Euro bills have this embedded somewhere. https://en.wikipedia.org/wiki/EURion_constellation https://en.wikipedia.org/wiki/EURion_constellation
  - deleted 8y ago
    [deleted]
- RankingMember 8y ago
  I've only heard of the built-in recognition of currency within image editing software, e.g. Photoshop. If you scan in currency and try to open it, the software (usually) detects it and won't let you: https://hyperallergic.com/195922/what-happens-when-you-try-to-photoshop-money/ https://hyperallergic.com/195922/what-happens-when-you-try-t...
cwkoss 8y ago
I wouldn't be surprised if the Secret Service (who regulates counterfeiting) works directly with printer/copier/scanner manufacturers.
- Balgair 8y ago
  It's much larger than just the US SS. Most governments have the EURion constellation in their bills: https://en.wikipedia.org/wiki/EURion_constellation https://en.wikipedia.org/wiki/EURion_constellation
Asooka 8y ago
I actually tried that - scanning and printing money on a normal office scanner/printer combo from HP. Euros worked fine, as did Scottish pounds. So unless the ATM I used to withdraw cash was loaded with fake notes, it doesn't seem to be true in general. Maybe it's only done on devices with really high DPI? I mean nobody would get deceived by a grainy 600DPI simple image of a banknote printed on standard office paper.

_underfl0w_ 8y ago

> Most printers/copiers have detection software Do you have a source for this? I've never heard of it but would be really interested in looking at, say, a disassembly of applicable firmware.

hexadec 8y ago
The Eurion Constellation is how this is usually done. Most US bills above a certain value and most larger Euro bills have this embedded somewhere. https://en.wikipedia.org/wiki/EURion_constellation https://en.wikipedia.org/wiki/EURion_constellation
- deleted 8y ago
  [deleted]
RankingMember 8y ago
I've only heard of the built-in recognition of currency within image editing software, e.g. Photoshop. If you scan in currency and try to open it, the software (usually) detects it and won't let you: https://hyperallergic.com/195922/what-happens-when-you-try-to-photoshop-money/ https://hyperallergic.com/195922/what-happens-when-you-try-t...

cwkoss 8y ago

I wouldn't be surprised if the Secret Service (who regulates counterfeiting) works directly with printer/copier/scanner manufacturers.

Balgair 8y ago
It's much larger than just the US SS. Most governments have the EURion constellation in their bills: https://en.wikipedia.org/wiki/EURion_constellation https://en.wikipedia.org/wiki/EURion_constellation

Asooka 8y ago

I actually tried that - scanning and printing money on a normal office scanner/printer combo from HP. Euros worked fine, as did Scottish pounds. So unless the ATM I used to withdraw cash was loaded with fake notes, it doesn't seem to be true in general. Maybe it's only done on devices with really high DPI? I mean nobody would get deceived by a grainy 600DPI simple image of a banknote printed on standard office paper.