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Comment by nwh | Hacker News Reader

Interestingly enough, lots of consumer printing software will not print images of US currency. Photoshop will absolutely not allow you to even open images of it.

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....omfg.

http://pbx.mine.nu/random/Series2004NoteFront.jpg

You are absolutely right. Newer banknotes are unable to be opened in Photoshop.

I feel dirty.

Huh, interesting. http://www.cl.cam.ac.uk/~sjm217/projects/currency/

What creepy version of photoshop do you use? Mine will let you paint it red too.

The standard consumer build.

http://i.imgur.com/fW7yaYU.png

CS4 was when I first encountered it.

Strange. Mine is CS5, works perfectly.

Try this one - http://pbx.mine.nu/random/Series2004NoteFront.jpg

Agreed, this is caught by photoshop. I tested with http://mrnussbaum.com/prescurr1/1.jpg . Apparently wasn't accurate enough for photoshop to complain.

What is printing software? I can Google '100 Dollar US Bill', download and print it.

I think you think printers work different than they do.

http://fstoppers.com/photoshop-wont-let-you-work-with-images...

Thanks for the link. I finally found a proper US note and the new ones are in fact blocked from being edited in Photoshop.

He's right, you are wrong. Modern color printers sold to consumers run image recognition on the images they print and refuse to print ones that contain features found in real money. Try it if you don't believe me.

They also add watermarks -- small almost imperceptible yellow dots that uniquely identify the printer in question.

I said that in the other comment above you. I knew about the yellow dots, but this is straight up creepytown.

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