04-01-2025, 10:39 AM
Dear Forum,
I have a picture with a secret message that you can only see if you look at it through a red filter.
I would like to change the image so that the message remains invisible to the naked eye, but becomes visible through a blue filter.
Is there a way to do this?
Thank you very much.
I have a picture with a secret message that you can only see if you look at it through a red filter.
I would like to change the image so that the message remains invisible to the naked eye, but becomes visible through a blue filter.
Is there a way to do this?
Thank you very much.