[Bender]

Semi-related question. Is there a method to print a picture on a t-shirt that can only be viewed by a camera and not be the naked eye? If so I would like to print images on the front and back of the shirt that would get the glasshole or cell phone cameras banned from their platforms.

[Intralexical]

Compare human cone cell spectral sensitivity to the camera modules inside the glasses. [0][1]

Usually digital cameras have some major differences from human eyes, particularly near UV and IR. Find dyes with spectral albedo that integrates to the same strengths for (most) humans' cones, but not for the glasses.

Though human eyes have pretty good dynamic range, and some degree of variation. Maybe add dithering around the edges.

[0]: https://commons.wikimedia.org/wiki/File:Cone-fundamentals-wi...

[1]: https://www.strollswithmydog.com/camera-spectral-sensitivity...

[avidiax]

You could make a moire pattern, but it would probably be pretty hard to get it flat enough on a shirt, and it wouldn't be distinct enough to get interpreted by AI.

[thenthenthen]

I saw some painting a while a go, looked just like random dots, so I took a picture with my smartphone and that revealed a portrait! Pretty amazing, must have been some moire thing indeed

[downboots]

Infrared LEDs, or a green screen if you have enough access