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Adobe Photoshop: Counterfeit deterrence system

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101–110 of 186 posts

Re: Adobe Photoshop: Counterfeit deterrence system

#102

Earlier quoted context omitted.

Making Monopoly money for the kids? You cannot make counterfeit currency with Photoshop. Paper money has security features that won't even convert to pixels in the first place, like holograms, transparencies and fibers embedded in the paper and such, never mind reproduce by conventional printing. This whole deterrence system is idiotic. People who accept an obviously fake printed copy of a banknote basically deserve…

At least in the US, ‘old’ bills are still legal tender. A counterfeit bill pre-holograms and recent security stuff is still usable in public.

This. There are relatively few visual cues for laypeople to detect counterfeit older (and even moderately recent) US dollar bills. There are no UV sensitive areas, the watermark line is rather faint and there's no special stuff like holographic images, transparent inserts or metal foils etc.

The only way I've really seen people check medium denomination ($10s, $20s, $50s) bills is via an iodine pen test which would react to starch in regular paper but is un-reactive on real bills which are actually printed on a fabric-based material. For large denominations ($100s) many places just don't accept them...

Re: Adobe Photoshop: Counterfeit deterrence system

#103

Earlier quoted context omitted.

What legitimate use case can you think of where the benefit of faithfully reproducing currency is not outweighed by the need to prevent the proliferation of counterfeit currency?

It doesn't matter whether or not the use case is "legitimate". The software must obey the user. If I tell the software to process the image of a bank note, that's exactly what it should do. Without complaining, warnings or refusal.

Photoshop does not copy banknotes. Neither does Tetris. Software authors are free to limit the scope of their functionality. Use another bitmap editor for banknote images, you have plenty of choice. If you use Free Software you can inspect and change the source if it doesn't do what you want.

Re: Adobe Photoshop: Counterfeit deterrence system

#104

Earlier quoted context omitted.

In hindsight do you think it would have been profitable to hold onto it? A quick look at eBay the listings range from ~500 EUR to ~2000 EUR. But what they actually sell for is what matters.

On the ebay sidebar there is a filter for Sold.

Or “completed items”

Re: Adobe Photoshop: Counterfeit deterrence system

#105

Years ago I had an Austrian 5000 Schilling note in absolute mint condition. It was a beautiful note with an image of Mozart on it but it was too expensive for me to keep just to admire (~$500 USD) so I cashed it in for local currency. (Also, it had to be converted as the Schilling was being made obsolete by the Euro.) However before I did I wanted to keep a permanent record of it so I scanned it in the highest resolu…

Money can be pretty. Before the euro (last century) a friend had a poster sized version of a 50(?) German Mark bill.

It's not particular beautiful, but I have a £50 in perfect condition. I intend to frame it and put it somewhere, as it has Alan Turing on the reverse.

https://en.numista.com/catalogue/note281993.html

Re: Adobe Photoshop: Counterfeit deterrence system

#106

Earlier quoted context omitted.

> But color ink, on paper of the right color and feel? Someone pulling off right color and feel is not going to be stopped by CBCDG's crusade to put some nonsense into Adobe Photoshop.

Yes, the feel of the paper in particular is impossible to casually replicate. However, what makes you think a particular minimum wage employee can actually feel the paper? People get injuries that affect their senses in weird ways. It’s still not fair to say that they “deserve it.” That said, I agree that Photoshop should not have this code. It’s on the Photoshop user to not be an asshole. That shouldn’t be Adobe’s p…

The physical object is so distinctive that it is hard for me to imagine photo printing being a critical step in faking it - https://www.littletoncoin.com/shop/How-Paper-Money-Is-Made .

The paper is the most instantaneously obvious to me - https://www.pbs.org/wgbh/nova/moolah/anatomypaper.html - just think how different real money is from Monopoly money when handled.

With COVID it seems that more cashiers are wearing rubber gloves. Do rubber gloves substantially diminished the tactile advantage of real currency? Hopefully not as it would be easy to pick these softer targets from a safe distance.

The paper has an interesting bit of history too - https://www.washingtonpost.com/business/economy/crane-has-pr...

Re: Adobe Photoshop: Counterfeit deterrence system

#107
post #3

A few years ago I extracted the CDS logic and got it working in Linux so I could experiment with it: https://twitter.com/taviso/status/902997594460135424 I had planned to see if I could come up with an image that would still be detected even with significant distortion, and then print it on a t-shirt... The idea being you couldn't open a photograph of me in PhotoShop! :) I got sidetracked, but I should get back to th…

Awesome idea! For anyone interested in the concept of adverserial clothing..

Medium size patch defeats/confuses person recognition: https://towardsdatascience.com/avoiding-detection-with-adver...

Anti-facial recognition mask: https://towardsdatascience.com/fooling-facial-detection-with...

Reflective anti-paparazzi scarf which washes out the wearer's face: https://theishu.com/pages/frequently-asked-questions

Clothing intended to trigger and pollute license plate detection systems: https://adversarialfashion.com/

Re: Adobe Photoshop: Counterfeit deterrence system

#108
post #3

A few years ago I extracted the CDS logic and got it working in Linux so I could experiment with it: https://twitter.com/taviso/status/902997594460135424 I had planned to see if I could come up with an image that would still be detected even with significant distortion, and then print it on a t-shirt... The idea being you couldn't open a photograph of me in PhotoShop! :) I got sidetracked, but I should get back to th…

They'll just have the AI blur out the shirt and keep your face. I just hold up my middle finger directly in front of my face.

How would they blur the shirt if they can't open the file?

Re: Adobe Photoshop: Counterfeit deterrence system

#109
relevant post on photoshop detection algorithm and the EURion pattern, some might find interesting:

https://murdoch.is/projects/currency/

"Further investigation showed that the detection performed by software is different from the system used in colour photocopiers, and the Eurion constellation is neither necessary nor sufficent, and in fact it probably is not even a factor."

Re: Adobe Photoshop: Counterfeit deterrence system

#110

Years ago I had an Austrian 5000 Schilling note in absolute mint condition. It was a beautiful note with an image of Mozart on it but it was too expensive for me to keep just to admire (~$500 USD) so I cashed it in for local currency. (Also, it had to be converted as the Schilling was being made obsolete by the Euro.) However before I did I wanted to keep a permanent record of it so I scanned it in the highest resolu…

As EURion was introduced in 1996, it looks like only the S500 and S1,000 from 1997 got the treatment[0] so you should be good to print it (in relation to EURion, other policies/laws might still apply)

[0] https://en.m.wikipedia.org/wiki/EURion_constellation#Usage

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