Print it on a shirt, and you have the thing William Gibson dreamed up in "Zero History":
"What’s that?" she asked.
"The ugliest T-shirt in the world," he said… "So ugly that digital cameras forget they’ve seen it."
"What’s that?" she asked.
"The ugliest T-shirt in the world," he said… "So ugly that digital cameras forget they’ve seen it."
Though I got the impression that it was a deliberate backdoor to allow security services to operate incognito, rather than an AI-fooling hack. Maybe just because the book was written before modern neural nets became so widespread.
A friend used to design systems for a major CCTV company. I asked him to add a similar backdoor for me, but sadly he never did...
Remember, the penultimate device in the novel was an antihero’s cornering the global marketplace order flow.