Adobe Photoshop: Counterfeit deterrence system
A few years ago I extracted the CDS logic and got it working in Linux so I could experiment with it:<p><a href="https://twitter.com/taviso/status/902997594460135424" rel="nofollow">https://twitter.com/taviso/status/902997594460135424</a><p>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! :)<p>I got sidetracked, but I should get back to that.