While perusing Q's posts we come away with a lot of cryptic stuff, we have no idea how to transcribe it.
On the other end of the spectrum is Q's remark that a lot of data is exchanged in password protected images with a hidden message inside.
But, there are other ways to do it. Some so ordinary, you wouldn't think twice about it.
Which ways?
How about a painting being the message. May be you're thinking the Nightwatch by Rembrandt or something. No, a bit more abstract, or rather more 21th century like. Or the lyrics. Or the tones.
There is a guy who wrote a programming language mimicking rocksongs. Shakespeare is a programming language that uses proza to identify what it needs to do. How about colors? There is even a recipe programming language.
Since we have computers, we've done some crazy stuff that boggles the mind. Have a look see and I do hope it will be as edifying to you as it was for me. A real eye opener.
Think of the way this would obfuscate a hidden message.
Here it is:
at this point i think we all have the message
Site. Lol!
I won't take time to watch that now, but I can think of many ways to encrypt a lot of data into images. If you converted an image though, like from png or bmp to jpg, most of it would be wiped out.
FWIW - I have extracted power supply noise (you could see the switching frequency) from images that was completely invisible otherwise.